code: def readmailcapfile(fp):
      """Read a mailcap file and return a dictionary keyed by MIME type."""
      warnings.warn(
          "readmailcapfile is deprecated, use getcaps instead",
          DeprecationWarning,
          2,
      )
      caps, _ = _readmailcapfile(fp, None)
      return caps
  
file_path: catboost/contrib/tools/python3/src/Lib/mailcap.py
imports: import os
  import warnings
  import re
label_desc: Use image node_id 4 for calling a global function with example usage: readmailcapfile(fp) and returns: caps