code: def read_py_url(url, errors="replace", skip_encoding_cookie=True):
      """Read a Python file from a URL, using the encoding declared inside the file.
  
      Parameters
      ----------
      url : str
          The URL from which to fetch the file.
      errors : str
          How to handle decoding errors in the file. Options are the same as for
          bytes.decode(), but here 'replace' is the default.
      skip_encoding_cookie : bool
          If True (the default), and the encoding declaration is found in the first
          two lines, that line will be excluded from the output.
  
      Returns
      -------
      A unicode string containing the contents of the file.
      """
      # Deferred import for faster start
      from urllib.request import urlopen
  
      response = urlopen(url)
      buffer = io.BytesIO(response.read())
      return source_to_unicode(buffer, errors, skip_encoding_cookie)
  
file_path: catboost/contrib/python/ipython/py3/IPython/utils/openpy.py
imports: import io
  from io import TextIOWrapper, BytesIO
  from pathlib import Path
  import re
  from tokenize import open, detect_encoding
label_desc: Use image node_id 4 for calling a global function with example usage: read_py_url(url, errors, skip_encoding_cookie) and returns: source_to_unicode