input:                         
  def detect_iteration_error(func_code: str) -> str:
      """ Analyzes the given Python function code to detect if the function attempts to modify the list while iterating over it, which can lead to unexpected behavior. The function should return a message indicating the error and suggesting a fix.
      
      >>> detect_iteration_error("def expand_list(list):\n    for item in list:\n        list *= 2")
      'The function is attempting to modify the list while iterating over it. This can lead to unexpected behavior and should be avoided. To fix the code, the list should be copied before the iteration takes place: def expand_list(list):\n    list_copy = list[:]   # make a copy of the list\n    for item in list_copy:\n        list *= 2'
      """
output:     lines = func_code.split('\n')
      for i, line in enumerate(lines):
          if 'for' in line and 'in' in line:
              list_var = line.split('in')[1].strip().split()[0]
              for j in range(i + 1, len(lines)):
                  if list_var in lines[j] and ('*=' in lines[j] or '+=' in lines[j] or '-=' in lines[j] or '/=' in lines[j]):
                      return f"The function is attempting to modify the list while iterating over it. This can lead to unexpected behavior and should be avoided. To fix the code, the list should be copied before the iteration takes place: {func_code.split(':\n')[0]}:\n    {list_var}_copy = {list_var}[:]   # make a copy of the list\n    {'    '.join(func_code.split(':\n')[1].split('\n'))}"
      return "No iteration error detected."