code: def _check_for_unicode_literals():
      if not __debug__:
          return
  
      from . import disable_unicode_literals_warning
  
      if not PY2 or disable_unicode_literals_warning:
          return
      bad_frame = _find_unicode_literals_frame()
      if bad_frame <= 0:
          return
      from warnings import warn
  
      warn(
          Warning(
              "Click detected the use of the unicode_literals __future__"
              " import. This is heavily discouraged because it can"
              " introduce subtle bugs in your code. You should instead"
              ' use explicit u"" literals for your unicode strings. For'
              " more information see"
              " https://click.palletsprojects.com/python3/"
          ),
          stacklevel=bad_frame,
      )
  
imports: import codecs
  import os
  import sys
  from ._compat import PY2
label_desc: Use image node_id 2 for calling a global function with example usage: _check_for_unicode_literals() without return types