code: def remove_comments(src):
      """Remove all comments from input source.
  
      Note: comments are NOT recognized inside of strings!
  
      Parameters
      ----------
      src : string
        A single or multiline input string.
  
      Returns
      -------
      String with all Python comments removed.
      """
  
      return re.sub("#.*", "", src)
  
imports: import ast
  import codeop
  import re
  import sys
  import warnings
  from IPython.utils.py3compat import cast_unicode
  from IPython.core.inputtransformer import leading_indent, classic_prompt, ipy_prompt, strip_encoding_cookie, cellmagic, assemble_logical_lines, help_end, escaped_commands, assign_from_magic, assign_from_system, assemble_python_lines
  from IPython.core.inputtransformer import ESC_SHELL, ESC_SH_CAP, ESC_HELP, ESC_HELP2, ESC_MAGIC, ESC_MAGIC2, ESC_QUOTE, ESC_QUOTE2, ESC_PAREN, ESC_SEQUENCES
label_desc: Use image node_id 4 for calling a global function with example usage: remove_comments(src) and returns: re