code: def arg_from_keywords(node, arg):
      """Retrieves a keyword argument from the node's keywords.
  
      Args:
          node (ast.Call): a node that represents a function call. For more,
              see https://docs.python.org/3/library/ast.html#abstract-grammar.
          arg (str): the name of the argument.
  
      Returns:
          ast.keyword: the keyword argument if it is present. Otherwise, this returns ``None``.
      """
      for kw in node.keywords:
          if kw.arg == arg:
              return kw
  
      return None
  
label_desc: Use image node_id 1 for calling a global function with example usage: arg_from_keywords(node, arg) and returns: None, kw