text: # -*- coding: utf-8 -*-
  
  # PLEASE DO NOT EDIT THIS FILE, IT IS GENERATED AND WILL BE OVERWRITTEN:
  # https://github.com/ccxt/ccxt/blob/master/CONTRIBUTING.md#how-to-contribute-code
  
  from ccxt.base.exchange import Exchange
  
  # -----------------------------------------------------------------------------
  
  try:
      basestring  # Python 3
  except NameError:
      basestring = str  # Python 2
  import math
  from ccxt.base.errors import ExchangeError
  from ccxt.base.errors import AuthenticationError
  from ccxt.base.errors import PermissionDenied
  from ccxt.base.errors import ArgumentsRequired
  from ccxt.base.errors import InsufficientFunds
  from ccxt.base.errors import InvalidAddress
  from ccxt.base.errors import InvalidOrder
  from ccxt.base.errors import OrderNotFound
  from ccxt.base.errors import NotSupported
  from ccxt.base.errors import ExchangeNotAvailable
  from ccxt.base.errors import OnMaintenance
  from ccxt.base.errors import InvalidNonce
  
  
  class bitstamp(Exchange):
  
      def describe(self):
          return self.deep_extend(super(bitstamp, self).describe(), {
              'id': 'bitstamp',
              'name': 'Bitstamp',
              'countries': ['GB'],
              'rateLimit': 1000,
              'version': 'v2',
              'userAgent': self.userAgents['chrome'],
              'pro': True,
              'has': {
                  'CORS': True,
                  'cancelAllOrders': True,
                  'cancelOrder': True,
                  'createOrder': True,
                  'fetchBalance': True,
                  'fetchDepositAddress': True,
                  'fetchMarkets': True,
                  'fetchCurrencies': True,
                  'fetchMyTrades': True,
                  'fetchOHLCV': True,
                  'fetchOpenOrders': True,
                  'fetchOrder': True,
                  'fetchOrderBook': True,
                  'fetchTicker': True,
                  'fetchTrades': True,
                  'fetchTransactions': True,
                  'fetchWithdrawals': True,
                  'withdraw': True,
                  'fetchTradingFee': True,
                  'fetchTradingFees': True,
                  'fetchFundingFees': True,
                  'fetchFees': True,
                  'fetchLedger': True,
              },
              'urls': {
                  'logo': 'https://user-images.githubusercontent.com/1294454/27786377-8c8ab57e-5fe9-11e7-8ea4-2b05b6bcceec.jpg',
                  'api': {
                      'public': 'https://www.bitstamp.net/api',
                      'private': 'https://www.bitstamp.net/api',
                      'v1': 'https://www.bitstamp.net/api',
                  },
                  'www': 'https://www.bitstamp.net',
                  'doc': 'https://www.bitstamp.net/api',
              },
              'timeframes': {
                  '1m': '60',
                  '3m': '180',
                  '5m': '300',
                  '15m': '900',
                  '30m': '1800',
                  '1h': '3600',
                  '2h': '7200',
                  '4h': '14400',
                  '6h': '21600',
                  '12h': '43200',
                  '1d': '86400',
                  '1w': '259200',
              },
              'requiredCredentials': {
                  'apiKey': True,
                  'secret': True,
                  'uid': True,
              },
              'api': {
                  'public': {
                      'get': [
                          'ohlc/{pair}/',
                          'order_book/{pair}/',
                          'ticker_hour/{pair}/',
                          'ticker/{pair}/',
                          'transactions/{pair}/',
                          'trading-pairs-info/',
                      ],
                  },
                  'private': {
                      'post': [
                          'balance/',
                          'balance/{pair}/',
                          'bch_withdrawal/',
                          'bch_address/',
                          'user_transactions/',
                          'user_transactions/{pair}/',
                          'open_orders/all/',
                          'open_orders/{pair}/',
                          'order_status/',
                          'cancel_order/',
                          'cancel_all_orders/',
                          'cancel_all_orders/{pair}/',
                          'buy/{pair}/',
                          'buy/market/{pair}/',
                          'buy/instant/{pair}/',
                          'sell/{pair}/',
                          'sell/market/{pair}/',
                          'sell/instant/{pair}/',
                          'btc_withdrawal/',
                          'btc_address/',
                          'ripple_withdrawal/',
                          'ripple_address/',
                          'ltc_withdrawal/',
                          'ltc_address/',
                          'eth_withdrawal/',
                          'eth_address/',
                          'xrp_withdrawal/',
                          'xrp_address/',
                          'xlm_withdrawal/',
                          'xlm_address/',
                          'pax_withdrawal/',
                          'pax_address/',
                          'link_withdrawal/',
                          'link_address/',
                          'usdc_withdrawal/',
                          'usdc_address/',
                          'omg_withdrawal/',
                          'omg_address/',
                          'dai_withdrawal/',
                          'dai_address/',
                          'knc_withdrawal/',
                          'knc_address/',
                          'mkr_withdrawal/',
                          'mkr_address/',
                          'zrx_withdrawal/',
                          'zrx_address/',
                          'gusd_withdrawal/',
                          'gusd_address/',
                          'aave_withdrawal/',
                          'aave_address/',
                          'bat_withdrawal/',
                          'bat_address/',
                          'uma_withdrawal/',
                          'uma_address/',
                          'snx_withdrawal/',
                          'snx_address/',
                          'uni_withdrawal/',
                          'uni_address/',
                          'yfi_withdrawal/',
                          'yfi_address',
                          'audio_withdrawal/',
                          'audio_address/',
                          'crv_withdrawal/',
                          'crv_address/',
                          'algo_withdrawal/',
                          'algo_address/',
                          'comp_withdrawal/',
                          'comp_address/',
                          'grt_withdrawal',
                          'grt_address/',
                          'usdt_withdrawal/',
                          'usdt_address/',
                          'transfer-to-main/',
                          'transfer-from-main/',
                          'withdrawal-requests/',
                          'withdrawal/open/',
                          'withdrawal/status/',
                          'withdrawal/cancel/',
                          'liquidation_address/new/',
                          'liquidation_address/info/',
                      ],
                  },
                  'v1': {
                      'post': [
                          'unconfirmed_btc/',
                      ],
                  },
              },
              'fees': {
                  'trading': {
                      'tierBased': True,
                      'percentage': True,
                      'taker': 0.5 / 100,
                      'maker': 0.5 / 100,
                      'tiers': {
                          'taker': [
                              [0, 0.5 / 100],
                              [20000, 0.25 / 100],
                              [100000, 0.24 / 100],
                              [200000, 0.22 / 100],
                              [400000, 0.20 / 100],
                              [600000, 0.15 / 100],
                              [1000000, 0.14 / 100],
                              [2000000, 0.13 / 100],
                              [4000000, 0.12 / 100],
                              [20000000, 0.11 / 100],
                              [50000000, 0.10 / 100],
                              [100000000, 0.07 / 100],
                              [500000000, 0.05 / 100],
                              [2000000000, 0.03 / 100],
                              [6000000000, 0.01 / 100],
                              [10000000000, 0.005 / 100],
                              [10000000001, 0.0],
                          ],
                          'maker': [
                              [0, 0.5 / 100],
                              [20000, 0.25 / 100],
                              [100000, 0.24 / 100],
                              [200000, 0.22 / 100],
                              [400000, 0.20 / 100],
                              [600000, 0.15 / 100],
                              [1000000, 0.14 / 100],
                              [2000000, 0.13 / 100],
                              [4000000, 0.12 / 100],
                              [20000000, 0.11 / 100],
                              [50000000, 0.10 / 100],
                              [100000000, 0.07 / 100],
                              [500000000, 0.05 / 100],
                              [2000000000, 0.03 / 100],
                              [6000000000, 0.01 / 100],
                              [10000000000, 0.005 / 100],
                              [10000000001, 0.0],
                          ],
                      },
                  },
                  'funding': {
                      'tierBased': False,
                      'percentage': False,
                      'withdraw': {
                          'BTC': 0.0005,
                          'BCH': 0.0001,
                          'LTC': 0.001,
                          'ETH': 0.001,
                          'XRP': 0.02,
                          'XLM': 0.005,
                          'PAX': 0.5,
                          'USD': 25,
                          'EUR': 3.0,
                      },
                      'deposit': {
                          'BTC': 0,
                          'BCH': 0,
                          'LTC': 0,
                          'ETH': 0,
                          'XRP': 0,
                          'XLM': 0,
                          'PAX': 0,
                          'USD': 7.5,
                          'EUR': 0,
                      },
                  },
              },
              'exceptions': {
                  'exact': {
                      'No permission found': PermissionDenied,
                      'API key not found': AuthenticationError,
                      'IP address not allowed': PermissionDenied,
                      'Invalid nonce': InvalidNonce,
                      'Invalid signature': AuthenticationError,
                      'Authentication failed': AuthenticationError,
                      'Missing key, signature and nonce parameters': AuthenticationError,
                      'Your account is frozen': PermissionDenied,
                      'Please update your profile with your FATCA information, before using API.': PermissionDenied,
                      'Order not found': OrderNotFound,
                      'Price is more than 20% below market price.': InvalidOrder,
                      'Bitstamp.net is under scheduled maintenance.': OnMaintenance,  # {"error": "Bitstamp.net is under scheduled maintenance. We'll be back soon."}
                      'Order could not be placed.': ExchangeNotAvailable,  # Order could not be placed(perhaps due to internal error or trade halt). Please retry placing order.
                  },
                  'broad': {
                      'Minimum order size is': InvalidOrder,  # Minimum order size is 5.0 EUR.
                      'Check your account balance for details.': InsufficientFunds,  # You have only 0.00100000 BTC available. Check your account balance for details.
                      'Ensure self value has at least': InvalidAddress,  # Ensure self value has at least 25 characters(it has 4).
                  },
              },
          })
  
      def fetch_markets(self, params={}):
          response = self.fetch_markets_from_cache(params)
          result = []
          for i in range(0, len(response)):
              market = response[i]
              name = self.safe_string(market, 'name')
              base, quote = name.split('/')
              baseId = base.lower()
              quoteId = quote.lower()
              base = self.safe_currency_code(base)
              quote = self.safe_currency_code(quote)
              symbol = base + '/' + quote
              symbolId = baseId + '_' + quoteId
              id = self.safe_string(market, 'url_symbol')
              amountPrecisionString = self.safe_string(market, 'base_decimals')
              pricePrecisionString = self.safe_string(market, 'counter_decimals')
              amountLimit = self.parse_precision(amountPrecisionString)
              priceLimit = self.parse_precision(pricePrecisionString)
              precision = {
                  'amount': int(amountPrecisionString),
                  'price': int(pricePrecisionString),
              }
              minimumOrder = self.safe_string(market, 'minimum_order')
              parts = minimumOrder.split(' ')
              cost = parts[0]
              # cost, currency = market['minimum_order'].split(' ')
              trading = self.safe_string(market, 'trading')
              active = (trading == 'Enabled')
              result.append({
                  'id': id,
                  'symbol': symbol,
                  'base': base,
                  'quote': quote,
                  'baseId': baseId,
                  'quoteId': quoteId,
                  'symbolId': symbolId,
                  'info': market,
                  'active': active,
                  'precision': precision,
                  'limits': {
                      'amount': {
                          'min': self.parse_number(amountLimit),
                          'max': None,
                      },
                      'price': {
                          'min': self.parse_number(priceLimit),
                          'max': None,
                      },
                      'cost': {
                          'min': self.parse_number(cost),
                          'max': None,
                      },
                  },
              })
          return result
  
      def construct_currency_object(self, id, code, name, precision, minCost, originalPayload):
          currencyType = 'crypto'
          description = self.describe()
          if self.is_fiat(code):
              currencyType = 'fiat'
          return {
              'id': id,
              'code': code,
              'info': originalPayload,  # the original payload
              'type': currencyType,
              'name': name,
              'active': True,
              'fee': self.safe_number(description['fees']['funding']['withdraw'], code),
              'precision': precision,
              'limits': {
                  'amount': {
                      'min': math.pow(10, -precision),
                      'max': None,
                  },
                  'price': {
                      'min': math.pow(10, -precision),
                      'max': None,
                  },
                  'cost': {
                      'min': minCost,
                      'max': None,
                  },
                  'withdraw': {
                      'min': None,
                      'max': None,
                  },
              },
          }
  
      def fetch_markets_from_cache(self, params={}):
          # self method is now redundant
          # currencies are now fetched before markets
          options = self.safe_value(self.options, 'fetchMarkets', {})
          timestamp = self.safe_integer(options, 'timestamp')
          expires = self.safe_integer(options, 'expires', 1000)
          now = self.milliseconds()
          if (timestamp is None) or ((now - timestamp) > expires):
              response = self.publicGetTradingPairsInfo(params)
              self.options['fetchMarkets'] = self.extend(options, {
                  'response': response,
                  'timestamp': now,
              })
          return self.safe_value(self.options['fetchMarkets'], 'response')
  
      def fetch_currencies(self, params={}):
          response = self.fetch_markets_from_cache(params)
          result = {}
          for i in range(0, len(response)):
              market = response[i]
              name = self.safe_string(market, 'name')
              base, quote = name.split('/')
              baseId = base.lower()
              quoteId = quote.lower()
              base = self.safe_currency_code(base)
              quote = self.safe_currency_code(quote)
              description = self.safe_string(market, 'description')
              baseDescription, quoteDescription = description.split(' / ')
              minimumOrder = self.safe_string(market, 'minimum_order')
              parts = minimumOrder.split(' ')
              cost = parts[0]
              if not (base in result):
                  baseDecimals = self.safe_integer(market, 'base_decimals')
                  result[base] = self.construct_currency_object(baseId, base, baseDescription, baseDecimals, None, market)
              if not (quote in result):
                  counterDecimals = self.safe_integer(market, 'counter_decimals')
                  result[quote] = self.construct_currency_object(quoteId, quote, quoteDescription, counterDecimals, float(cost), market)
          return result
  
      def fetch_order_book(self, symbol, limit=None, params={}):
          self.load_markets()
          request = {
              'pair': self.market_id(symbol),
          }
          response = self.publicGetOrderBookPair(self.extend(request, params))
          #
          #     {
          #         "timestamp": "1583652948",
          #         "microtimestamp": "1583652948955826",
          #         "bids": [
          #             ["8750.00", "1.33685271"],
          #             ["8749.39", "0.07700000"],
          #             ["8746.98", "0.07400000"],
          #         ]
          #         "asks": [
          #             ["8754.10", "1.51995636"],
          #             ["8754.71", "1.40000000"],
          #             ["8754.72", "2.50000000"],
          #         ]
          #     }
          #
          microtimestamp = self.safe_integer(response, 'microtimestamp')
          timestamp = int(microtimestamp / 1000)
          orderbook = self.parse_order_book(response, symbol, timestamp)
          orderbook['nonce'] = microtimestamp
          return orderbook
  
      def fetch_ticker(self, symbol, params={}):
          self.load_markets()
          request = {
              'pair': self.market_id(symbol),
          }
          ticker = self.publicGetTickerPair(self.extend(request, params))
          timestamp = self.safe_timestamp(ticker, 'timestamp')
          vwap = self.safe_number(ticker, 'vwap')
          baseVolume = self.safe_number(ticker, 'volume')
          quoteVolume = None
          if baseVolume is not None and vwap is not None:
              quoteVolume = baseVolume * vwap
          last = self.safe_number(ticker, 'last')
          return {
              'symbol': symbol,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'high': self.safe_number(ticker, 'high'),
              'low': self.safe_number(ticker, 'low'),
              'bid': self.safe_number(ticker, 'bid'),
              'bidVolume': None,
              'ask': self.safe_number(ticker, 'ask'),
              'askVolume': None,
              'vwap': vwap,
              'open': self.safe_number(ticker, 'open'),
              'close': last,
              'last': last,
              'previousClose': None,
              'change': None,
              'percentage': None,
              'average': None,
              'baseVolume': baseVolume,
              'quoteVolume': quoteVolume,
              'info': ticker,
          }
  
      def get_currency_id_from_transaction(self, transaction):
          #
          #     {
          #         "fee": "0.00000000",
          #         "btc_usd": "0.00",
          #         "datetime": XXX,
          #         "usd": 0.0,
          #         "btc": 0.0,
          #         "eth": "0.05000000",
          #         "type": "0",
          #         "id": XXX,
          #         "eur": 0.0
          #     }
          #
          currencyId = self.safe_string_lower(transaction, 'currency')
          if currencyId is not None:
              return currencyId
          transaction = self.omit(transaction, [
              'fee',
              'price',
              'datetime',
              'type',
              'status',
              'id',
          ])
          ids = list(transaction.keys())
          for i in range(0, len(ids)):
              id = ids[i]
              if id.find('_') < 0:
                  value = self.safe_number(transaction, id)
                  if (value is not None) and (value != 0):
                      return id
          return None
  
      def get_market_from_trade(self, trade):
          trade = self.omit(trade, [
              'fee',
              'price',
              'datetime',
              'tid',
              'type',
              'order_id',
              'side',
          ])
          currencyIds = list(trade.keys())
          numCurrencyIds = len(currencyIds)
          if numCurrencyIds > 2:
              raise ExchangeError(self.id + ' getMarketFromTrade too many keys: ' + self.json(currencyIds) + ' in the trade: ' + self.json(trade))
          if numCurrencyIds == 2:
              marketId = currencyIds[0] + currencyIds[1]
              if marketId in self.markets_by_id:
                  return self.markets_by_id[marketId]
              marketId = currencyIds[1] + currencyIds[0]
              if marketId in self.markets_by_id:
                  return self.markets_by_id[marketId]
          return None
  
      def get_market_from_trades(self, trades):
          tradesBySymbol = self.index_by(trades, 'symbol')
          symbols = list(tradesBySymbol.keys())
          numSymbols = len(symbols)
          if numSymbols == 1:
              return self.markets[symbols[0]]
          return None
  
      def parse_trade(self, trade, market=None):
          #
          # fetchTrades(public)
          #
          #     {
          #         date: '1551814435',
          #         tid: '83581898',
          #         price: '0.03532850',
          #         type: '1',
          #         amount: '0.85945907'
          #     },
          #
          # fetchMyTrades, trades returned within fetchOrder(private)
          #
          #     {
          #         "usd": "6.0134400000000000",
          #         "price": "4008.96000000",
          #         "datetime": "2019-03-28 23:07:37.233599",
          #         "fee": "0.02",
          #         "btc": "0.00150000",
          #         "tid": 84452058,
          #         "type": 2
          #     }
          #
          # from fetchOrder:
          #    {fee: '0.000019',
          #     price: '0.00015803',
          #     datetime: '2018-01-07 10:45:34.132551',
          #     btc: '0.0079015000000000',
          #     tid: 42777395,
          #     type: 2,  #(0 - deposit; 1 - withdrawal; 2 - market trade) NOT buy/sell
          #     xrp: '50.00000000'}
          id = self.safe_string_2(trade, 'id', 'tid')
          symbol = None
          side = None
          price = self.safe_number(trade, 'price')
          amount = self.safe_number(trade, 'amount')
          orderId = self.safe_string(trade, 'order_id')
          type = None
          cost = self.safe_number(trade, 'cost')
          if market is None:
              keys = list(trade.keys())
              for i in range(0, len(keys)):
                  if keys[i].find('_') >= 0:
                      marketId = keys[i].replace('_', '')
                      if marketId in self.markets_by_id:
                          market = self.markets_by_id[marketId]
              # if the market is still not defined
              # try to deduce it from used keys
              if market is None:
                  market = self.get_market_from_trade(trade)
          feeCost = self.safe_number(trade, 'fee')
          feeCurrency = None
          if market is not None:
              price = self.safe_number(trade, market['symbolId'], price)
              amount = self.safe_number(trade, market['baseId'], amount)
              cost = self.safe_number(trade, market['quoteId'], cost)
              feeCurrency = market['quote']
              symbol = market['symbol']
          timestamp = self.safe_string_2(trade, 'date', 'datetime')
          if timestamp is not None:
              if timestamp.find(' ') >= 0:
                  # iso8601
                  timestamp = self.parse8601(timestamp)
              else:
                  # string unix epoch in seconds
                  timestamp = int(timestamp)
                  timestamp = timestamp * 1000
          # if it is a private trade
          if 'id' in trade:
              if amount is not None:
                  if amount < 0:
                      side = 'sell'
                      amount = -amount
                  else:
                      side = 'buy'
          else:
              side = self.safe_string(trade, 'type')
              if side == '1':
                  side = 'sell'
              elif side == '0':
                  side = 'buy'
          if cost is None:
              if price is not None:
                  if amount is not None:
                      cost = price * amount
          if cost is not None:
              cost = abs(cost)
          fee = None
          if feeCost is not None:
              fee = {
                  'cost': feeCost,
                  'currency': feeCurrency,
              }
          return {
              'id': id,
              'info': trade,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'symbol': symbol,
              'order': orderId,
              'type': type,
              'side': side,
              'takerOrMaker': None,
              'price': price,
              'amount': amount,
              'cost': cost,
              'fee': fee,
          }
  
      def parse_trading_fee(self, balances, symbol):
          market = self.market(symbol)
          tradeFee = self.safe_number(balances, market['id'] + '_fee')
          return {
              'symbol': symbol,
              'maker': tradeFee,
              'taker': tradeFee,
          }
  
      def fetch_trades(self, symbol, since=None, limit=None, params={}):
          self.load_markets()
          market = self.market(symbol)
          request = {
              'pair': market['id'],
              'time': 'hour',
          }
          response = self.publicGetTransactionsPair(self.extend(request, params))
          #
          #     [
          #         {
          #             date: '1551814435',
          #             tid: '83581898',
          #             price: '0.03532850',
          #             type: '1',
          #             amount: '0.85945907'
          #         },
          #         {
          #             date: '1551814434',
          #             tid: '83581896',
          #             price: '0.03532851',
          #             type: '1',
          #             amount: '11.34130961'
          #         },
          #     ]
          #
          return self.parse_trades(response, market, since, limit)
  
      def parse_ohlcv(self, ohlcv, market=None):
          #
          #     {
          #         "high": "9064.77",
          #         "timestamp": "1593961440",
          #         "volume": "18.49436608",
          #         "low": "9040.87",
          #         "close": "9064.77",
          #         "open": "9040.87"
          #     }
          #
          return [
              self.safe_timestamp(ohlcv, 'timestamp'),
              self.safe_number(ohlcv, 'open'),
              self.safe_number(ohlcv, 'high'),
              self.safe_number(ohlcv, 'low'),
              self.safe_number(ohlcv, 'close'),
              self.safe_number(ohlcv, 'volume'),
          ]
  
      def fetch_ohlcv(self, symbol, timeframe='1m', since=None, limit=None, params={}):
          self.load_markets()
          market = self.market(symbol)
          request = {
              'pair': market['id'],
              'step': self.timeframes[timeframe],
          }
          duration = self.parse_timeframe(timeframe)
          if limit is None:
              if since is None:
                  raise ArgumentsRequired(self.id + ' fetchOHLCV() requires a since argument or a limit argument')
              else:
                  limit = 1000
                  start = int(since / 1000)
                  request['start'] = start
                  request['end'] = self.sum(start, limit * duration)
                  request['limit'] = limit
          else:
              if since is not None:
                  start = int(since / 1000)
                  request['start'] = start
                  request['end'] = self.sum(start, limit * duration)
              request['limit'] = min(limit, 1000)  # min 1, max 1000
          response = self.publicGetOhlcPair(self.extend(request, params))
          #
          #     {
          #         "data": {
          #             "pair": "BTC/USD",
          #             "ohlc": [
          #                 {"high": "9064.77", "timestamp": "1593961440", "volume": "18.49436608", "low": "9040.87", "close": "9064.77", "open": "9040.87"},
          #                 {"high": "9071.59", "timestamp": "1593961500", "volume": "3.48631711", "low": "9058.76", "close": "9061.07", "open": "9064.66"},
          #                 {"high": "9067.33", "timestamp": "1593961560", "volume": "0.04142833", "low": "9061.94", "close": "9061.94", "open": "9067.33"},
          #             ],
          #         }
          #     }
          #
          data = self.safe_value(response, 'data', {})
          ohlc = self.safe_value(data, 'ohlc', [])
          return self.parse_ohlcvs(ohlc, market, timeframe, since, limit)
  
      def fetch_balance(self, params={}):
          self.load_markets()
          balance = self.privatePostBalance(params)
          #
          #     {
          #         "aave_available": "0.00000000",
          #         "aave_balance": "0.00000000",
          #         "aave_reserved": "0.00000000",
          #         "aave_withdrawal_fee": "0.07000000",
          #         "aavebtc_fee": "0.000",
          #         "aaveeur_fee": "0.000",
          #         "aaveusd_fee": "0.000",
          #         "bat_available": "0.00000000",
          #         "bat_balance": "0.00000000",
          #         "bat_reserved": "0.00000000",
          #         "bat_withdrawal_fee": "5.00000000",
          #         "batbtc_fee": "0.000",
          #         "bateur_fee": "0.000",
          #         "batusd_fee": "0.000",
          #     }
          #
          result = {
              'info': balance,
              'timestamp': None,
              'datetime': None,
          }
          codes = list(self.currencies.keys())
          for i in range(0, len(codes)):
              code = codes[i]
              currency = self.currency(code)
              currencyId = currency['id']
              account = self.account()
              account['free'] = self.safe_string(balance, currencyId + '_available')
              account['used'] = self.safe_string(balance, currencyId + '_reserved')
              account['total'] = self.safe_string(balance, currencyId + '_balance')
              result[code] = account
          return self.parse_balance(result, False)
  
      def fetch_trading_fee(self, symbol, params={}):
          self.load_markets()
          request = {}
          method = 'privatePostBalance'
          market = None
          if symbol is not None:
              market = self.market(symbol)
              request['pair'] = market['id']
              method += 'Pair'
          balance = getattr(self, method)(self.extend(request, params))
          return {
              'info': balance,
              'symbol': symbol,
              'maker': balance['fee'],
              'taker': balance['fee'],
          }
  
      def prase_trading_fees(self, balance):
          result = {'info': balance}
          markets = list(self.markets.keys())
          for i in range(0, len(markets)):
              symbol = markets[i]
              fee = self.parse_trading_fee(balance, symbol)
              result[symbol] = fee
          return result
  
      def fetch_trading_fees(self, params={}):
          self.load_markets()
          balance = self.privatePostBalance(params)
          return self.prase_trading_fees(balance)
  
      def parse_funding_fees(self, balance):
          withdraw = {}
          ids = list(balance.keys())
          for i in range(0, len(ids)):
              id = ids[i]
              if id.find('_withdrawal_fee') >= 0:
                  currencyId = id.split('_')[0]
                  code = self.safe_currency_code(currencyId)
                  withdraw[code] = self.safe_number(balance, id)
          return {
              'info': balance,
              'withdraw': withdraw,
              'deposit': {},
          }
  
      def fetch_funding_fees(self, params={}):
          self.load_markets()
          balance = self.privatePostBalance(params)
          return self.parse_funding_fees(balance)
  
      def fetch_fees(self, params={}):
          self.load_markets()
          balance = self.privatePostBalance(params)
          tradingFees = self.prase_trading_fees(balance)
          del tradingFees['info']
          fundingFees = self.parse_funding_fees(balance)
          del fundingFees['info']
          return {
              'info': balance,
              'trading': tradingFees,
              'funding': fundingFees,
          }
  
      def create_order(self, symbol, type, side, amount, price=None, params={}):
          self.load_markets()
          market = self.market(symbol)
          method = 'privatePost' + self.capitalize(side)
          request = {
              'pair': market['id'],
              'amount': self.amount_to_precision(symbol, amount),
          }
          if type == 'market':
              method += 'Market'
          elif type == 'instant':
              method += 'Instant'
          else:
              request['price'] = self.price_to_precision(symbol, price)
          method += 'Pair'
          response = getattr(self, method)(self.extend(request, params))
          order = self.parse_order(response, market)
          return self.extend(order, {
              'type': type,
          })
  
      def cancel_order(self, id, symbol=None, params={}):
          self.load_markets()
          request = {
              'id': id,
          }
          return self.privatePostCancelOrder(self.extend(request, params))
  
      def cancel_all_orders(self, symbol=None, params={}):
          self.load_markets()
          market = None
          request = {}
          method = 'privatePostCancelAllOrders'
          if symbol is not None:
              market = self.market(symbol)
              request['pair'] = market['id']
              method = 'privatePostCancelAllOrdersPair'
          return getattr(self, method)(self.extend(request, params))
  
      def parse_order_status(self, status):
          statuses = {
              'In Queue': 'open',
              'Open': 'open',
              'Finished': 'closed',
              'Canceled': 'canceled',
          }
          return self.safe_string(statuses, status, status)
  
      def fetch_order_status(self, id, symbol=None, params={}):
          self.load_markets()
          request = {
              'id': id,
          }
          response = self.privatePostOrderStatus(self.extend(request, params))
          return self.parse_order_status(self.safe_string(response, 'status'))
  
      def fetch_order(self, id, symbol=None, params={}):
          self.load_markets()
          market = None
          if symbol is not None:
              market = self.market(symbol)
          request = {'id': id}
          response = self.privatePostOrderStatus(self.extend(request, params))
          #
          #     {
          #         "status": "Finished",
          #         "id": 3047704374,
          #         "transactions": [
          #             {
          #                 "usd": "6.0134400000000000",
          #                 "price": "4008.96000000",
          #                 "datetime": "2019-03-28 23:07:37.233599",
          #                 "fee": "0.02",
          #                 "btc": "0.00150000",
          #                 "tid": 84452058,
          #                 "type": 2
          #             }
          #         ]
          #     }
          return self.parse_order(response, market)
  
      def fetch_my_trades(self, symbol=None, since=None, limit=None, params={}):
          self.load_markets()
          request = {}
          method = 'privatePostUserTransactions'
          market = None
          if symbol is not None:
              market = self.market(symbol)
              request['pair'] = market['id']
              method += 'Pair'
          if limit is not None:
              request['limit'] = limit
          response = getattr(self, method)(self.extend(request, params))
          result = self.filter_by(response, 'type', '2')
          return self.parse_trades(result, market, since, limit)
  
      def fetch_transactions(self, code=None, since=None, limit=None, params={}):
          self.load_markets()
          request = {}
          if limit is not None:
              request['limit'] = limit
          response = self.privatePostUserTransactions(self.extend(request, params))
          #
          #     [
          #         {
          #             "fee": "0.00000000",
          #             "btc_usd": "0.00",
          #             "id": 1234567894,
          #             "usd": 0,
          #             "btc": 0,
          #             "datetime": "2018-09-08 09:00:31",
          #             "type": "1",
          #             "xrp": "-20.00000000",
          #             "eur": 0,
          #         },
          #         {
          #             "fee": "0.00000000",
          #             "btc_usd": "0.00",
          #             "id": 1134567891,
          #             "usd": 0,
          #             "btc": 0,
          #             "datetime": "2018-09-07 18:47:52",
          #             "type": "0",
          #             "xrp": "20.00000000",
          #             "eur": 0,
          #         },
          #     ]
          #
          currency = None
          if code is not None:
              currency = self.currency(code)
          transactions = self.filter_by_array(response, 'type', ['0', '1'], False)
          return self.parse_transactions(transactions, currency, since, limit)
  
      def fetch_withdrawals(self, code=None, since=None, limit=None, params={}):
          self.load_markets()
          request = {}
          if since is not None:
              request['timedelta'] = self.milliseconds() - since
          else:
              request['timedelta'] = 50000000  # use max bitstamp approved value
          response = self.privatePostWithdrawalRequests(self.extend(request, params))
          #
          #     [
          #         {
          #             status: 2,
          #             datetime: '2018-10-17 10:58:13',
          #             currency: 'BTC',
          #             amount: '0.29669259',
          #             address: 'aaaaa',
          #             type: 1,
          #             id: 111111,
          #             transaction_id: 'xxxx',
          #         },
          #         {
          #             status: 2,
          #             datetime: '2018-10-17 10:55:17',
          #             currency: 'ETH',
          #             amount: '1.11010664',
          #             address: 'aaaa',
          #             type: 16,
          #             id: 222222,
          #             transaction_id: 'xxxxx',
          #         },
          #     ]
          #
          return self.parse_transactions(response, None, since, limit)
  
      def parse_transaction(self, transaction, currency=None):
          #
          # fetchTransactions
          #
          #     {
          #         "fee": "0.00000000",
          #         "btc_usd": "0.00",
          #         "id": 1234567894,
          #         "usd": 0,
          #         "btc": 0,
          #         "datetime": "2018-09-08 09:00:31",
          #         "type": "1",
          #         "xrp": "-20.00000000",
          #         "eur": 0,
          #     }
          #
          # fetchWithdrawals
          #
          #     {
          #         status: 2,
          #         datetime: '2018-10-17 10:58:13',
          #         currency: 'BTC',
          #         amount: '0.29669259',
          #         address: 'aaaaa',
          #         type: 1,
          #         id: 111111,
          #         transaction_id: 'xxxx',
          #     }
          #
          #     {
          #         "id": 3386432,
          #         "type": 14,
          #         "amount": "863.21332500",
          #         "status": 2,
          #         "address": "rE1sdh25BJQ3qFwngiTBwaq3zPGGYcrjp1?dt=1455",
          #         "currency": "XRP",
          #         "datetime": "2018-01-05 15:27:55",
          #         "transaction_id": "001743B03B0C79BA166A064AC0142917B050347B4CB23BA2AB4B91B3C5608F4C"
          #     }
          #
          timestamp = self.parse8601(self.safe_string(transaction, 'datetime'))
          id = self.safe_string(transaction, 'id')
          currencyId = self.get_currency_id_from_transaction(transaction)
          code = self.safe_currency_code(currencyId, currency)
          feeCost = self.safe_number(transaction, 'fee')
          feeCurrency = None
          amount = None
          if 'amount' in transaction:
              amount = self.safe_number(transaction, 'amount')
          elif currency is not None:
              amount = self.safe_number(transaction, currency['id'], amount)
              feeCurrency = currency['code']
          elif (code is not None) and (currencyId is not None):
              amount = self.safe_number(transaction, currencyId, amount)
              feeCurrency = code
          if amount is not None:
              # withdrawals have a negative amount
              amount = abs(amount)
          status = 'ok'
          if 'status' in transaction:
              status = self.parse_transaction_status(self.safe_string(transaction, 'status'))
          type = None
          if 'type' in transaction:
              # from fetchTransactions
              rawType = self.safe_string(transaction, 'type')
              if rawType == '0':
                  type = 'deposit'
              elif rawType == '1':
                  type = 'withdrawal'
          else:
              # from fetchWithdrawals
              type = 'withdrawal'
          txid = self.safe_string(transaction, 'transaction_id')
          tag = None
          address = self.safe_string(transaction, 'address')
          if address is not None:
              # dt(destination tag) is embedded into the address field
              addressParts = address.split('?dt=')
              numParts = len(addressParts)
              if numParts > 1:
                  address = addressParts[0]
                  tag = addressParts[1]
          addressFrom = None
          addressTo = address
          tagFrom = None
          tagTo = tag
          fee = None
          if feeCost is not None:
              fee = {
                  'currency': feeCurrency,
                  'cost': feeCost,
                  'rate': None,
              }
          return {
              'info': transaction,
              'id': id,
              'txid': txid,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'addressFrom': addressFrom,
              'addressTo': addressTo,
              'address': address,
              'tagFrom': tagFrom,
              'tagTo': tagTo,
              'tag': tag,
              'type': type,
              'amount': amount,
              'currency': code,
              'status': status,
              'updated': None,
              'fee': fee,
          }
  
      def parse_transaction_status(self, status):
          # withdrawals:
          # 0(open), 1(in process), 2(finished), 3(canceled) or 4(failed).
          statuses = {
              '0': 'pending',  # Open
              '1': 'pending',  # In process
              '2': 'ok',  # Finished
              '3': 'canceled',  # Canceled
              '4': 'failed',  # Failed
          }
          return self.safe_string(statuses, status, status)
  
      def parse_order(self, order, market=None):
          # from fetch order:
          #   {status: 'Finished',
          #     id: 731693945,
          #     transactions:
          #     [{fee: '0.000019',
          #         price: '0.00015803',
          #         datetime: '2018-01-07 10:45:34.132551',
          #         btc: '0.0079015000000000',
          #         tid: 42777395,
          #         type: 2,
          #         xrp: '50.00000000'}]}
          #
          # partially filled order:
          #   {"id": 468646390,
          #     "status": "Canceled",
          #     "transactions": [{
          #         "eth": "0.23000000",
          #         "fee": "0.09",
          #         "tid": 25810126,
          #         "usd": "69.8947000000000000",
          #         "type": 2,
          #         "price": "303.89000000",
          #         "datetime": "2017-11-11 07:22:20.710567"
          #     }]}
          #
          # from create order response:
          #     {
          #         price: '0.00008012',
          #         currency_pair: 'XRP/BTC',
          #         datetime: '2019-01-31 21:23:36',
          #         amount: '15.00000000',
          #         type: '0',
          #         id: '2814205012'
          #     }
          #
          id = self.safe_string(order, 'id')
          side = self.safe_string(order, 'type')
          if side is not None:
              side = 'sell' if (side == '1') else 'buy'
          # there is no timestamp from fetchOrder
          timestamp = self.parse8601(self.safe_string(order, 'datetime'))
          marketId = self.safe_string_lower(order, 'currency_pair')
          symbol = self.safe_symbol(marketId, market, '/')
          status = self.parse_order_status(self.safe_string(order, 'status'))
          amount = self.safe_number(order, 'amount')
          transactions = self.safe_value(order, 'transactions', [])
          trades = self.parse_trades(transactions, market)
          length = len(trades)
          if length:
              symbol = trades[0]['symbol']
          price = self.safe_number(order, 'price')
          return self.safe_order({
              'id': id,
              'clientOrderId': None,
              'datetime': self.iso8601(timestamp),
              'timestamp': timestamp,
              'lastTradeTimestamp': None,
              'status': status,
              'symbol': symbol,
              'type': None,
              'timeInForce': None,
              'postOnly': None,
              'side': side,
              'price': price,
              'stopPrice': None,
              'cost': None,
              'amount': amount,
              'filled': None,
              'remaining': None,
              'trades': trades,
              'fee': None,
              'info': order,
              'average': None,
          })
  
      def parse_ledger_entry_type(self, type):
          types = {
              '0': 'transaction',
              '1': 'transaction',
              '2': 'trade',
              '14': 'transfer',
          }
          return self.safe_string(types, type, type)
  
      def parse_ledger_entry(self, item, currency=None):
          #
          #     [
          #         {
          #             "fee": "0.00000000",
          #             "btc_usd": "0.00",
          #             "id": 1234567894,
          #             "usd": 0,
          #             "btc": 0,
          #             "datetime": "2018-09-08 09:00:31",
          #             "type": "1",
          #             "xrp": "-20.00000000",
          #             "eur": 0,
          #         },
          #         {
          #             "fee": "0.00000000",
          #             "btc_usd": "0.00",
          #             "id": 1134567891,
          #             "usd": 0,
          #             "btc": 0,
          #             "datetime": "2018-09-07 18:47:52",
          #             "type": "0",
          #             "xrp": "20.00000000",
          #             "eur": 0,
          #         },
          #     ]
          #
          type = self.parse_ledger_entry_type(self.safe_string(item, 'type'))
          if type == 'trade':
              parsedTrade = self.parse_trade(item)
              market = None
              keys = list(item.keys())
              for i in range(0, len(keys)):
                  if keys[i].find('_') >= 0:
                      marketId = keys[i].replace('_', '')
                      if marketId in self.markets_by_id:
                          market = self.markets_by_id[marketId]
              # if the market is still not defined
              # try to deduce it from used keys
              if market is None:
                  market = self.get_market_from_trade(item)
              direction = parsedTrade['side'] == 'in' if 'buy' else 'out'
              return {
                  'id': parsedTrade['id'],
                  'info': item,
                  'timestamp': parsedTrade['timestamp'],
                  'datetime': parsedTrade['datetime'],
                  'direction': direction,
                  'account': None,
                  'referenceId': parsedTrade['order'],
                  'referenceAccount': None,
                  'type': type,
                  'currency': market['base'],
                  'amount': parsedTrade['amount'],
                  'before': None,
                  'after': None,
                  'status': 'ok',
                  'fee': parsedTrade['fee'],
              }
          else:
              parsedTransaction = self.parse_transaction(item)
              direction = None
              if 'amount' in item:
                  amount = self.safe_number(item, 'amount')
                  direction = amount > 'in' if 0 else 'out'
              elif ('currency' in parsedTransaction) and parsedTransaction['currency'] is not None:
                  currencyId = self.currency_id(parsedTransaction['currency'])
                  amount = self.safe_number(item, currencyId)
                  direction = amount > 'in' if 0 else 'out'
              return {
                  'id': parsedTransaction['id'],
                  'info': item,
                  'timestamp': parsedTransaction['timestamp'],
                  'datetime': parsedTransaction['datetime'],
                  'direction': direction,
                  'account': None,
                  'referenceId': parsedTransaction['txid'],
                  'referenceAccount': None,
                  'type': type,
                  'currency': parsedTransaction['currency'],
                  'amount': parsedTransaction['amount'],
                  'before': None,
                  'after': None,
                  'status': parsedTransaction['status'],
                  'fee': parsedTransaction['fee'],
              }
  
      def fetch_ledger(self, code=None, since=None, limit=None, params={}):
          self.load_markets()
          request = {}
          if limit is not None:
              request['limit'] = limit
          response = self.privatePostUserTransactions(self.extend(request, params))
          currency = None
          if code is not None:
              currency = self.currency(code)
          return self.parse_ledger(response, currency, since, limit)
  
      def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
          market = None
          self.load_markets()
          if symbol is not None:
              market = self.market(symbol)
          response = self.privatePostOpenOrdersAll(params)
          #     [
          #         {
          #             price: '0.00008012',
          #             currency_pair: 'XRP/BTC',
          #             datetime: '2019-01-31 21:23:36',
          #             amount: '15.00000000',
          #             type: '0',
          #             id: '2814205012',
          #         }
          #     ]
          #
          return self.parse_orders(response, market, since, limit, {
              'status': 'open',
              'type': 'limit',
          })
  
      def get_currency_name(self, code):
          return code.lower()
  
      def is_fiat(self, code):
          return code == 'USD' or code == 'EUR' or code == 'GBP'
  
      def fetch_deposit_address(self, code, params={}):
          if self.is_fiat(code):
              raise NotSupported(self.id + ' fiat fetchDepositAddress() for ' + code + ' is not supported!')
          name = self.get_currency_name(code)
          method = 'privatePost' + self.capitalize(name) + 'Address'
          response = getattr(self, method)(params)
          address = self.safe_string(response, 'address')
          tag = self.safe_string_2(response, 'memo_id', 'destination_tag')
          self.check_address(address)
          return {
              'currency': code,
              'address': address,
              'tag': tag,
              'info': response,
          }
  
      def withdraw(self, code, amount, address, tag=None, params={}):
          # For fiat withdrawals please provide all required additional parameters in the 'params'
          # Check https://www.bitstamp.net/api/ under 'Open bank withdrawal' for list and description.
          self.load_markets()
          self.check_address(address)
          request = {
              'amount': amount,
          }
          method = None
          if not self.is_fiat(code):
              name = self.get_currency_name(code)
              method = 'privatePost' + self.capitalize(name) + 'Withdrawal'
              if code == 'XRP':
                  if tag is not None:
                      request['destination_tag'] = tag
              request['address'] = address
          else:
              method = 'privatePostWithdrawalOpen'
              currency = self.currency(code)
              request['iban'] = address
              request['account_currency'] = currency['id']
          response = getattr(self, method)(self.extend(request, params))
          return {
              'info': response,
              'id': response['id'],
          }
  
      def nonce(self):
          return self.milliseconds()
  
      def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
          url = self.urls['api'][api] + '/'
          if api != 'v1':
              url += self.version + '/'
          url += self.implode_params(path, params)
          query = self.omit(params, self.extract_params(path))
          if api == 'public':
              if query:
                  url += '?' + self.urlencode(query)
          else:
              self.check_required_credentials()
              authVersion = self.safe_value(self.options, 'auth', 'v2')
              if (authVersion == 'v1') or (api == 'v1'):
                  nonce = str(self.nonce())
                  auth = nonce + self.uid + self.apiKey
                  signature = self.encode(self.hmac(self.encode(auth), self.encode(self.secret)))
                  query = self.extend({
                      'key': self.apiKey,
                      'signature': signature.upper(),
                      'nonce': nonce,
                  }, query)
                  body = self.urlencode(query)
                  headers = {
                      'Content-Type': 'application/x-www-form-urlencoded',
                  }
              else:
                  xAuth = 'BITSTAMP ' + self.apiKey
                  xAuthNonce = self.uuid()
                  xAuthTimestamp = str(self.milliseconds())
                  xAuthVersion = 'v2'
                  contentType = ''
                  headers = {
                      'X-Auth': xAuth,
                      'X-Auth-Nonce': xAuthNonce,
                      'X-Auth-Timestamp': xAuthTimestamp,
                      'X-Auth-Version': xAuthVersion,
                  }
                  if method == 'POST':
                      if query:
                          body = self.urlencode(query)
                          contentType = 'application/x-www-form-urlencoded'
                          headers['Content-Type'] = contentType
                      else:
                          # sending an empty POST request will trigger
                          # an API0020 error returned by the exchange
                          # therefore for empty requests we send a dummy object
                          # https://github.com/ccxt/ccxt/issues/6846
                          body = self.urlencode({'foo': 'bar'})
                          contentType = 'application/x-www-form-urlencoded'
                          headers['Content-Type'] = contentType
                  authBody = body if body else ''
                  auth = xAuth + method + url.replace('https://', '') + contentType + xAuthNonce + xAuthTimestamp + xAuthVersion + authBody
                  signature = self.hmac(self.encode(auth), self.encode(self.secret))
                  headers['X-Auth-Signature'] = signature
          return {'url': url, 'method': method, 'body': body, 'headers': headers}
  
      def handle_errors(self, httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody):
          if response is None:
              return
          #
          #     {"error": "No permission found"}  # fetchDepositAddress returns self on apiKeys that don't have the permission required
          #     {"status": "error", "reason": {"__all__": ["Minimum order size is 5.0 EUR."]}}
          #     reuse of a nonce gives: {status: 'error', reason: 'Invalid nonce', code: 'API0004'}
          status = self.safe_string(response, 'status')
          error = self.safe_value(response, 'error')
          if (status == 'error') or (error is not None):
              errors = []
              if isinstance(error, basestring):
                  errors.append(error)
              elif error is not None:
                  keys = list(error.keys())
                  for i in range(0, len(keys)):
                      key = keys[i]
                      value = self.safe_value(error, key)
                      if isinstance(value, list):
                          errors = self.array_concat(errors, value)
                      else:
                          errors.append(value)
              reason = self.safe_value(response, 'reason', {})
              if isinstance(reason, basestring):
                  errors.append(reason)
              else:
                  all = self.safe_value(reason, '__all__', [])
                  for i in range(0, len(all)):
                      errors.append(all[i])
              code = self.safe_string(response, 'code')
              if code == 'API0005':
                  raise AuthenticationError(self.id + ' invalid signature, use the uid for the main account if you have subaccounts')
              feedback = self.id + ' ' + body
              for i in range(0, len(errors)):
                  value = errors[i]
                  self.throw_exactly_matched_exception(self.exceptions['exact'], value, feedback)
                  self.throw_broadly_matched_exception(self.exceptions['broad'], value, feedback)
              raise ExchangeError(feedback)
  