hunk.code_window:             }
               throw new ExchangeError (this.id + ' returned an empty response');
           }
       }
       nonce () {
           return this.milliseconds ();
  
hunk.labels: keep replace keep keep keep keep keep
hunk.file_path: js/bitmex.js
hunk.type: replace
file: # -*- coding: utf-8 -*-
  
  from ccxt.async.base.exchange import Exchange
  import hashlib
  from ccxt.base.errors import ExchangeError
  
  
  class zaif (Exchange):
  
      def describe(self):
          return self.deep_extend(super(zaif, self).describe(), {
              'id': 'zaif',
              'name': 'Zaif',
              'countries': 'JP',
              'rateLimit': 2000,
              'version': '1',
              'hasCORS': False,
              'hasFetchOpenOrders': True,
              'hasFetchClosedOrders': True,
              'hasWithdraw': True,
              'urls': {
                  'logo': 'https://user-images.githubusercontent.com/1294454/27766927-39ca2ada-5eeb-11e7-972f-1b4199518ca6.jpg',
                  'api': 'https://api.zaif.jp',
                  'www': 'https://zaif.jp',
                  'doc': [
                      'http://techbureau-api-document.readthedocs.io/ja/latest/index.html',
                      'https://corp.zaif.jp/api-docs',
                      'https://corp.zaif.jp/api-docs/api_links',
                      'https://www.npmjs.com/package/zaif.jp',
                      'https://github.com/you21979/node-zaif',
                  ],
              },
              'api': {
                  'public': {
                      'get': [
                          'depth/{pair}',
                          'currencies/{pair}',
                          'currencies/all',
                          'currency_pairs/{pair}',
                          'currency_pairs/all',
                          'last_price/{pair}',
                          'ticker/{pair}',
                          'trades/{pair}',
                      ],
                  },
                  'private': {
                      'post': [
                          'active_orders',
                          'cancel_order',
                          'deposit_history',
                          'get_id_info',
                          'get_info',
                          'get_info2',
                          'get_personal_info',
                          'trade',
                          'trade_history',
                          'withdraw',
                          'withdraw_history',
                      ],
                  },
                  'ecapi': {
                      'post': [
                          'createInvoice',
                          'getInvoice',
                          'getInvoiceIdsByOrderNumber',
                          'cancelInvoice',
                      ],
                  },
                  'tlapi': {
                      'post': [
                          'get_positions',
                          'position_history',
                          'active_positions',
                          'create_position',
                          'change_position',
                          'cancel_position',
                      ],
                  },
                  'fapi': {
                      'get': [
                          'groups/{group_id}',
                          'last_price/{group_id}/{pair}',
                          'ticker/{group_id}/{pair}',
                          'trades/{group_id}/{pair}',
                          'depth/{group_id}/{pair}',
                      ],
                  },
              },
          })
  
      async def fetch_markets(self):
          markets = await self.publicGetCurrencyPairsAll()
          result = []
          for p in range(0, len(markets)):
              market = markets[p]
              id = market['currency_pair']
              symbol = market['name']
              base, quote = symbol.split('/')
              result.append({
                  'id': id,
                  'symbol': symbol,
                  'base': base,
                  'quote': quote,
                  'info': market,
              })
          return result
  
      async def fetch_balance(self, params={}):
          await self.load_markets()
          response = await self.privatePostGetInfo()
          balances = response['return']
          result = {'info': balances}
          currencies = list(balances['funds'].keys())
          for c in range(0, len(currencies)):
              currency = currencies[c]
              balance = balances['funds'][currency]
              uppercase = currency.upper()
              account = {
                  'free': balance,
                  'used': 0.0,
                  'total': balance,
              }
              if 'deposit' in balances:
                  if currency in balances['deposit']:
                      account['total'] = balances['deposit'][currency]
                      account['used'] = account['total'] - account['free']
              result[uppercase] = account
          return self.parse_balance(result)
  
      async def fetch_order_book(self, symbol, params={}):
          await self.load_markets()
          orderbook = await self.publicGetDepthPair(self.extend({
              'pair': self.market_id(symbol),
          }, params))
          return self.parse_order_book(orderbook)
  
      async def fetch_ticker(self, symbol, params={}):
          await self.load_markets()
          ticker = await self.publicGetTickerPair(self.extend({
              'pair': self.market_id(symbol),
          }, params))
          timestamp = self.milliseconds()
          vwap = ticker['vwap']
          baseVolume = ticker['volume']
          quoteVolume = baseVolume * vwap
          return {
              'symbol': symbol,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'high': ticker['high'],
              'low': ticker['low'],
              'bid': ticker['bid'],
              'ask': ticker['ask'],
              'vwap': vwap,
              'open': None,
              'close': None,
              'first': None,
              'last': ticker['last'],
              'change': None,
              'percentage': None,
              'average': None,
              'baseVolume': baseVolume,
              'quoteVolume': quoteVolume,
              'info': ticker,
          }
  
      def parse_trade(self, trade, market=None):
          side = 'buy' if (trade['trade_type'] == 'bid') else 'sell'
          timestamp = trade['date'] * 1000
          id = self.safe_string(trade, 'id')
          id = self.safe_string(trade, 'tid', id)
          if not market:
              market = self.markets_by_id[trade['currency_pair']]
          return {
              'id': str(id),
              'info': trade,
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'symbol': market['symbol'],
              'type': None,
              'side': side,
              'price': trade['price'],
              'amount': trade['amount'],
          }
  
      async def fetch_trades(self, symbol, since=None, limit=None, params={}):
          await self.load_markets()
          market = self.market(symbol)
          response = await self.publicGetTradesPair(self.extend({
              'pair': market['id'],
          }, params))
          return self.parse_trades(response, market, since, limit)
  
      async def create_order(self, symbol, type, side, amount, price=None, params={}):
          await self.load_markets()
          if type == 'market':
              raise ExchangeError(self.id + ' allows limit orders only')
          response = await self.privatePostTrade(self.extend({
              'currency_pair': self.market_id(symbol),
              'action': 'bid' if (side == 'buy') else 'ask',
              'amount': amount,
              'price': price,
          }, params))
          return {
              'info': response,
              'id': str(response['return']['order_id']),
          }
  
      async def cancel_order(self, id, symbol=None, params={}):
          return await self.privatePostCancelOrder(self.extend({
              'order_id': id,
          }, params))
  
      def parse_order(self, order, market=None):
          side = 'buy' if (order['action'] == 'bid') else 'sell'
          timestamp = int(order['timestamp']) * 1000
          if not market:
              market = self.markets_by_id[order['currency_pair']]
          price = order['price']
          amount = order['amount']
          return {
              'id': str(order['id']),
              'timestamp': timestamp,
              'datetime': self.iso8601(timestamp),
              'status': 'open',
              'symbol': market['symbol'],
              'type': 'limit',
              'side': side,
              'price': price,
              'cost': price * amount,
              'amount': amount,
              'filled': None,
              'remaining': None,
              'trades': None,
              'fee': None,
          }
  
      def parse_orders(self, orders, market=None, since=None, limit=None):
          ids = list(orders.keys())
          result = []
          for i in range(0, len(ids)):
              id = ids[i]
              order = orders[id]
              extended = self.extend(order, {'id': id})
              result.append(self.parse_order(extended, market))
          return self.filter_by_since_limit(result, since, limit)
  
      async def fetch_open_orders(self, symbol=None, since=None, limit=None, params={}):
          await self.load_markets()
          market = None
          request = {
              # 'is_token': False,
              # 'is_token_both': False,
          }
          if symbol:
              market = self.market(symbol)
              request['currency_pair'] = market['id']
          response = await self.privatePostActiveOrders(self.extend(request, params))
          return self.parse_orders(response['return'], market, since, limit)
  
      async def fetch_closed_orders(self, symbol=None, since=None, limit=None, params={}):
          await self.load_markets()
          market = None
          request = {
              # 'from': 0,
              # 'count': 1000,
              # 'from_id': 0,
              # 'end_id': 1000,
              # 'order': 'DESC',
              # 'since': 1503821051,
              # 'end': 1503821051,
              # 'is_token': False,
          }
          if symbol:
              market = self.market(symbol)
              request['currency_pair'] = market['id']
          response = await self.privatePostTradeHistory(self.extend(request, params))
          return self.parse_orders(response['return'], market, since, limit)
  
      async def withdraw(self, currency, amount, address, params={}):
          await self.load_markets()
          if currency == 'JPY':
              raise ExchangeError(self.id + ' does not allow ' + currency + ' withdrawals')
          result = await self.privatePostWithdraw(self.extend({
              'currency': currency,
              'amount': amount,
              'address': address,
              # 'message': 'Hinot ',  # XEM only
              # 'opt_fee': 0.003,  # BTC and MONA only
          }, params))
          return {
              'info': result,
              'id': result['return']['txid'],
              'fee': result['return']['fee'],
          }
  
      def sign(self, path, api='public', method='GET', params={}, headers=None, body=None):
          url = self.urls['api'] + '/'
          if api == 'public':
              url += 'api/' + self.version + '/' + self.implode_params(path, params)
          elif api == 'fapi':
              url += 'fapi/' + self.version + '/' + self.implode_params(path, params)
          else:
              self.check_required_credentials()
              if api == 'ecapi':
                  url += 'ecapi'
              elif api == 'tlapi':
                  url += 'tlapi'
              else:
                  url += 'tapi'
              nonce = self.nonce()
              body = self.urlencode(self.extend({
                  'method': path,
                  'nonce': nonce,
              }, params))
              headers = {
                  'Content-Type': 'application/x-www-form-urlencoded',
                  'Key': self.apiKey,
                  'Sign': self.hmac(self.encode(body), self.encode(self.secret), hashlib.sha512),
              }
          return {'url': url, 'method': method, 'body': body, 'headers': headers}
  
      async def request(self, path, api='api', method='GET', params={}, headers=None, body=None):
          response = await self.fetch2(path, api, method, params, headers, body)
          if 'error' in response:
              raise ExchangeError(self.id + ' ' + response['error'])
          if 'success' in response:
              if not response['success']:
                  raise ExchangeError(self.id + ' ' + self.json(response))
          return response
  