code: def url_content_length(fhandle):
      length = dict(fhandle.info())["Content-Length"]
      return int(length.strip())
  
imports: import sys
  from io import BytesIO
  from urllib.request import urlopen
label_desc: Use image node_id 2 for calling a global function with example usage: url_content_length(fhandle) and returns: int