import?urllib.request

response?=?urllib.request.urlopen('http://127.0.0.1:9999/')
print(response)
for?k,?v?in?response.getheaders():
????print('{}:?{}'.format(k,?v))

我編輯了一個(gè)http.py文件，內(nèi)容如上。然后在終端輸入：python3 http.py

去執(zhí)行它，它就會(huì)報(bào)錯(cuò)，如下：

Traceback (most recent call last):

? File "/Users/fangxiaoyan/Documents/pyPractise/http.py", line 3, in <module>

? ? import urllib.request

? File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/urllib/request.py", line 88, in <module>

? ? import http.client

? File "/Users/fangxiaoyan/Documents/pyPractise/http.py", line 6, in <module>

? ? response = urllib.request.urlopen('http://127.0.0.1:9999')

?? ? ? ? ? ? ? ^^^^^^^^^^^^^^

AttributeError: cannot access submodule 'request' of module 'urllib' (most likely due to a circular import)

但是如果我直接在終端輸入python3，然后輸入上面的代碼去執(zhí)行，又沒有問題。這是為啥呢？