input: from typing import List
  
  def detect_list_modification_error(function_code: str) -> bool:
      """ Detect if the provided Python function attempts to modify its list argument
          while iterating over it, which can lead to unexpected behavior.
          >>> detect_list_modification_error('''def expand_list(list):
      for item in list:
          list *= 2''')
          True
          >>> detect_list_modification_error('''def correct_list_function(list):
      list_copy = list[:]
      for item in list_copy:
          list *= 2''')
          False
      """
output:     import ast
  
      class ListModificationDetector(ast.NodeVisitor):
          def __init__(self):
              self.modifying_while_iterating = False
  
          def visit_For(self, node):
              if isinstance(node.iter, ast.Name) and isinstance(node.iter.ctx, ast.Load):
                  iter_name = node.iter.id
                  for child in ast.walk(node):
                      if isinstance(child, ast.Assign) and any(isinstance(target, ast.Subscript) and isinstance(target.value, ast.Name) and target.value.id == iter_name for target in child.targets):
                          self.modifying_while_iterating = True
                      elif isinstance(child, ast.AugAssign) and isinstance(child.target, ast.Subscript) and isinstance(child.target.value, ast.Name) and child.target.value.id == iter_name:
                          self.modifying_while_iterating = True
              self.generic_visit(node)
  
      try:
          tree = ast.parse(function_code)
          detector = ListModificationDetector()
          detector.visit(tree)
          return detector.modifying_while_iterating
      except SyntaxError:
          return False