input: Write a function to detect potential errors in a given Python code and provide a corrected version. The function should identify if any modifications to a list are being made while iterating over it, and if so, suggest a solution where the list is copied before iteration. 
  
  def detect_and_correct_error(code):
      if "for item in list:" in code and "list *= 2" in code:
          corrected_code = code.replace("for item in list:", "list_copy = list[:]  # make a copy of the list\n    for item in list_copy:")
          return corrected_code
      return code
  
  assert detect_and_correct_error("def expand_list(list):\n    for item in list:\n        list *= 2") == "def expand_list(list):\n    list_copy = list[:]  # make a copy of the list\n    for item in list_copy:\n        list *= 2"
  assert detect_and_correct_error("def another_function(x):\n    print(x)") == "def another_function(x):\n    print(x)"
  assert detect_and_correct_error("def another_list_function(lst):\n    for item in lst:\n        lst.append(item)") == "def another_list_function(lst):\n    list_copy = lst[:]  # make a copy of the list\n    for item in list_copy:\n        lst.append(item)"
  
output: def detect_and_correct_error(code):
      if "for item in list:" in code and ("list *= 2" in code or "list.append(" in code or "list.remove(" in code or "list.pop(" in code):
          corrected_code = code.replace("for item in list:", "list_copy = list[:]  # make a copy of the list\n    for item in list_copy:")
          return corrected_code
      return code