code: def check_valid_identifier(identifier):
      if not isidentifier(identifier):
          raise ValueError(
              "%r is not a valid python identifier" % (identifier,)
          )
  
imports: from __future__ import absolute_import, division, print_function
  import ast
  import hashlib
  import inspect
  import re
  import types
  from functools import wraps
  from types import ModuleType
  from hypothesis.internal.compat import ARG_NAME_ATTRIBUTE, PY2, getfullargspec, hrange, isidentifier, qualname, str_to_bytes, to_str, to_unicode, update_code_location
  from hypothesis.vendor.pretty import pretty
label_desc: Use image node_id 15 for calling a global function with example usage: check_valid_identifier(identifier) without return types