code: def randbelow(exclusive_upper_bound):
      """Return a random int in the range [0, n)."""
      if exclusive_upper_bound <= 0:
          raise ValueError("Upper bound must be positive.")
      return _sysrand._randbelow(exclusive_upper_bound)
  
file_path: catboost/contrib/tools/python3/src/Lib/secrets.py
imports: import base64
  import binascii
  from hmac import compare_digest
  from random import SystemRandom
label_desc: Use image node_id 1 for calling a global function with example usage: randbelow(exclusive_upper_bound) and returns: _sysrand