code: def __init__(self):
      global Web3
      try:
          from web3 import Web3, HTTPProvider
      except ImportError:
          raise MarketplaceRequiresPython3()
  
      self.addresses = get_user_pubaddr()
      if not self.addresses[0]["accepted_terms"]:
          terms_and_conditions_url = urllib.urlopen(
              TERMS_AND_CONDITIONS
          )
          terms_and_conditions = terms_and_conditions_url.read().decode(
              terms_and_conditions_url.info().get_content_charset()
          )
          print(terms_and_conditions)
          while True:
              accepted_terms = (
                  input(
                      "Do you accept these terms and "
                      "conditions? [y, n] "
                  )
                  .lower()
                  .strip()
              )
              if accepted_terms == "y":
                  for address in self.addresses:
                      address["accepted_terms"] = True
                  save_user_pubaddr(self.addresses)
                  print()
                  break
  
      if self.addresses[0]["pubAddr"] == "":
          print(
              "We need to populate a file located at {} to be used for "
              "future marketplace requests. \n"
              "You shouldn't need to interact with this file from here "
              "on out, but if you need to, you can go "
              "ahead and edit this file directly.".format(
                  os.path.join(
                      get_marketplace_folder(), "addresses.json"
                  )
              )
          )
          while True:
              pub_addr = input(
                  "What is your Ethereum public address? "
              ).strip()
              if pub_addr:
                  break
          desc = input(
              "What is a description for this address (optional, "
              "but helpful to distinguish between "
              "multiple accounts you may be using)? "
          )
          while True:
              wallet = input(
                  "What wallet type are you using (strongly "
                  "recommend metamask)? [metamask, ledger, "
                  "bitbox, keystore, key] "
              )
              if wallet in [
                  "metamask",
                  "ledger",
                  "bitbox",
                  "keystore",
                  "key",
              ]:
                  break
          self.addresses[0].update(
              {"pubAddr": pub_addr, "desc": desc, "wallet": wallet}
          )
          save_user_pubaddr(self.addresses)
          print()
  
      self.default_account = self.addresses[0]["pubAddr"]
  
      self.web3 = Web3(HTTPProvider(ETH_REMOTE_NODE))
  
      contract_url = urllib.urlopen(MARKETPLACE_CONTRACT)
  
      self.mkt_contract_address = Web3.toChecksumAddress(
          contract_url.readline()
          .decode(contract_url.info().get_content_charset())
          .strip()
      )
  
      abi_url = urllib.urlopen(MARKETPLACE_CONTRACT_ABI)
      abi_url = abi_url.read().decode(
          abi_url.info().get_content_charset()
      )
  
      abi = json.loads(abi_url)
  
      self.mkt_contract = self.web3.eth.contract(
          self.mkt_contract_address,
          abi=abi,
      )
  
      contract_url = urllib.urlopen(ENIGMA_CONTRACT)
  
      self.eng_contract_address = Web3.toChecksumAddress(
          contract_url.readline()
          .decode(contract_url.info().get_content_charset())
          .strip()
      )
  
      abi_url = urllib.urlopen(ENIGMA_CONTRACT_ABI)
      abi_url = abi_url.read().decode(
          abi_url.info().get_content_charset()
      )
  
      abi = json.loads(abi_url)
  
      self.eng_contract = self.web3.eth.contract(
          self.eng_contract_address,
          abi=abi,
      )
  
imports: from __future__ import print_function
  import glob
  import json
  import os
  import re
  import shutil
  import sys
  import time
  import webbrowser
  import bcolz
  import logbook
  import pandas
  import requests
  from requests_toolbelt import MultipartDecoder
  from requests_toolbelt.multipart.decoder import NonMultipartContentTypeException
  from catalyst.constants import LOG_LEVEL, AUTH_SERVER, ETH_REMOTE_NODE, MARKETPLACE_CONTRACT, MARKETPLACE_CONTRACT_ABI, ENIGMA_CONTRACT, ENIGMA_CONTRACT_ABI, TERMS_AND_CONDITIONS
  from catalyst.exchange.utils.stats_utils import set_print_settings
  from catalyst.marketplace.marketplace_errors import MarketplaceDatasetNotFound, MarketplaceNoAddressMatch, MarketplaceHTTPRequest, MarketplaceNoCSVFiles, MarketplaceRequiresPython3
  from catalyst.marketplace.utils.auth_utils import get_key_secret, get_signed_headers
  from catalyst.marketplace.utils.eth_utils import bin_hex, from_grains, to_grains
  from catalyst.marketplace.utils.path_utils import get_bundle_folder, get_data_source_folder, get_marketplace_folder, get_user_pubaddr, get_temp_bundles_folder, extract_bundle, save_user_pubaddr
  from catalyst.utils.paths import ensure_directory
label_desc: Use image node_id 1 to create a new Marketplace object  with example: obj = Marketplace()