code: def requote_uri(uri):
      
      # To reduce tabulator import time
      import requests.utils
      if six.PY2:
          def url_encode_non_ascii(bytes):
              pattern = '[\x80-\xFF]'
              replace = lambda c: ('%%%02x' % ord(c.group(0))).upper()
              return re.sub(pattern, replace, bytes)
          parts = urlparse(uri)
          uri = urlunparse(
              part.encode('idna') if index == 1
              else url_encode_non_ascii(part.encode('utf-8'))
              for index, part in enumerate(parts))
      return requests.utils.requote_uri(uri)
docs: Requote uri if it contains non-ascii chars, spaces etc.