Day08 对自学任务中作业1 的疑问

import re
def stats_text_en(text):
    '''1、使用字典（dict)统计text中每个英文单词出现的次数.
    2、添加类型检查，如果不是字符串类型为异常'''
    try:
        text + ""
    except ValueError as e:
       print(e)

    result = re.sub("[^A-Za-z]", " ", text.strip())
    d = {}    
    for x in result.split( ):
        if not x in d:
            d[x] = 1
        else:
            d[x] = d[x]+1
    return d

我的代码是用 try except,这样的话异常提示是 TypeError: can only concatenate tuple (not "str") to tuple。不符合题目要求的ValueError错误，如果用raise的话，那提示错误信息就是自定义的啊，这符合作业要求吗？作业要求是包含完整的错误提示信息，自定义的提示信息也可以吗

No repository file or test is named. Start by reading the Day08 self-study Task 1 wording and comparing it with Python's exception behavior; done means the expected exception type and whether custom messages satisfy the stated complete-error-message requirement are explicitly clarified.