code: def _get_prefixes_max_len():
      # Compute the max prefix len of registered compressors.
      prefixes = [
          len(compressor.prefix) for compressor in _COMPRESSORS.values()
      ]
      prefixes += [len(_ZFILE_PREFIX)]
      return max(prefixes)
  
file_path: catboost/contrib/python/joblib/joblib/numpy_pickle_utils.py
imports: import pickle
  import io
  import sys
  import warnings
  import contextlib
  from .compressor import _ZFILE_PREFIX
  from .compressor import _COMPRESSORS
label_desc: Use image node_id 2 for calling a global function with example usage: _get_prefixes_max_len() and returns: max