code: def iter_fields(fields):
      fields = fields.copy()
      for key in [
          "key",
          "acl",
          "Filename",
          "success_action_status",
          "AWSAccessKeyId",
          "Policy",
          "Signature",
          "Content-Type",
          "file",
      ]:
          yield key, fields.pop(key)
      yield from fields.items()
  
imports: import getpass
  import json
  import os
  import re
  import sys
  import requests
label_desc: Use image node_id 14 for calling a global function with example usage: iter_fields(fields) without return types