python文件显示AttributeError：模块'http'没有属性'client'

Question

我有以下 Python 脚本：

import http
import requests
from bs4 import BeautifulSoup
import urllib3
import pyrebase
import numpy as np
import yagmail
import time
from datetime import datetime, timedelta
import sys
import logging
import colorama
import csv
from random import randint
from numpy import genfromtxt
import sched, time
import threading
import http.client

import firebase_admin
from firebase_admin import credentials
from firebase_admin import db


# Fetch the service account key JSON file contents
cred = credentials.Certificate('service-account-credentials.json')
# Initialize the app with a service account, granting admin privileges
firebase_admin.initialize_app(cred, {
    'databaseURL': 'https://werrwrrw-catalogue.firebaseio.com'
})


config = {
    "apiKey": "BiXzaSdwhjwrhwjjrhwr",
    "authDomain": "whjwrhwjjrhwr.firebaseapp.com",
    "databaseURL": "https://whjwrhwjjrhwr.firebaseio.com",
    "projectId": "whjwrhwjjrhwr",
    "storageBucket": "rewrrrrr.appspot.com",
    "messagingSenderId": "606543434441"
}



firebaseuser = pyrebase.initialize_app(config)

auth = firebaseuser.auth()
dbuser = firebaseuser.database()

subref = db.reference('Subcribers').get()

for key, val in subref.items():
    subcriber_email = val['Email']
    print(key,subcriber_email)

python 文件之前运行正常，但现在我尝试运行它时，它显示以下错误：

>>Traceback (most recent call last):
  File "fax.py", line 1, in <module>
    import requests
  File "/Users/name/anaconda/lib/python3.6/site-packages/requests/__init__.py", line 43, in <module>
    import urllib3
  File "/Users/name/anaconda/lib/python3.6/site-packages/urllib3/__init__.py", line 8, in <module>
    from .connectionpool import (
  File "/Users/name/anaconda/lib/python3.6/site-packages/urllib3/connectionpool.py", line 11, in <module>
    from .exceptions import (
  File "/Users/name/anaconda/lib/python3.6/site-packages/urllib3/exceptions.py", line 2, in <module>
    from .packages.six.moves.http_client import (
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 646, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 616, in _load_backward_compatible
  File "/Users/name/anaconda/lib/python3.6/site-packages/urllib3/packages/six.py", line 203, in load_module
    mod = mod._resolve()
  File "/Users/name/anaconda/lib/python3.6/site-packages/urllib3/packages/six.py", line 115, in _resolve
    return _import_module(self.mod)
  File "/Users/name/anaconda/lib/python3.6/site-packages/urllib3/packages/six.py", line 82, in _import_module
    __import__(name)
  File "/Users/name/anaconda/lib/python3.6/http/client.py", line 71, in <module>
    import email.parser
  File "/Users/name/Desktop/Google Drive/FEBB/serverless/crwlr/email.py", line 3, in <module>
    from bs4 import BeautifulSoup
  File "/Users/name/anaconda/lib/python3.6/site-packages/bs4/__init__.py", line 35, in <module>
    from .builder import builder_registry, ParserRejectedMarkup
  File "/Users/name/anaconda/lib/python3.6/site-packages/bs4/builder/__init__.py", line 323, in <module>
    from . import _html5lib
  File "/Users/name/anaconda/lib/python3.6/site-packages/bs4/builder/_html5lib.py", line 20, in <module>
    import html5lib
  File "/Users/name/anaconda/lib/python3.6/site-packages/html5lib/__init__.py", line 19, in <module>
    from .serializer import serialize
  File "/Users/name/anaconda/lib/python3.6/site-packages/html5lib/serializer/__init__.py", line 5, in <module>
    from .htmlserializer import HTMLSerializer
  File "/Users/name/anaconda/lib/python3.6/site-packages/html5lib/serializer/htmlserializer.py", line 15, in <module>
    from xml.sax.saxutils import escape
  File "/Users/name/anaconda/lib/python3.6/xml/sax/saxutils.py", line 6, in <module>
    import os, urllib.parse, urllib.request
  File "/Users/name/anaconda/lib/python3.6/urllib/request.py", line 1350, in <module>
    if hasattr(http.client, 'HTTPSConnection'):
AttributeError: module 'http' has no attribute 'client'

我无法确定错误所在。如何根据上面的回溯阅读修复错误？

Answer 1

我碰巧有一个名为email.py的本地模块文件，称为requests的导入错误。

参考：Python modules with identical names (i.e., reusing standard module names in packages)

Answer 2

这里：

File "/Users/name/anaconda/lib/python3.6/http/client.py", line 71, in <module>
    import email.parser
File "/Users/name/Desktop/Google Drive/FEBB/serverless/crwlr/email.py"
    from bs4 import BeautifulSoup

/Users/name/Desktop/Google Drive/FEBB/serverless/crwlr/ 中的本地 email.py 会影响 stdlib 的。现在在你本地的 email.py 模块中，你正在导入 bs4，它导入 html5lib，它导入 xml.sax.saxutils，它导入 urllib.request，它要导入 http。

IOW 你最终会得到一个（意外的）循环依赖。此时 http 模块只是部分导入，还没有定义“客户端”，因此出现错误。

简单的解决方案是将您的“email.py”模块重命名为其他名称，或者（如果它只是一个脚本而不是模块）将它移出您的 pythonpath。

编辑：我刚刚注意到您的代码是通过导入 http 开始的，所以 http 模块 应该 已经完全加载，所以即使您的 email.py 脚本/模块的问题需要修复，这不应该 导致这个问题。因此，您的sys.path 中可能还有另一个http.py 模块或http 包来遮蔽stdlib 的包。要对此进行调试，请在 import http 之后添加这一行：

 print(http)

这应该打印如下内容：

<module 'http' from '/some/path/to/a/python/file.pyc`>

如果路径不是您的 python 安装 stdlib 的“http/init.pyc”的路径，那么您找到了违规者。如果它是您自己的脚本/模块之一，则修复与email.py 相同。

Answer 3

所以

>>> import http
>>> import http.client
>>> if hasattr(http.client, 'HTTPSConnection'):
...     print (type(http.client))
... 
<class 'module'>
>>> 

http.client 应该是模块，它不应该在http 实例上调用client 属性，对吧？

解决方案 - 我不知道 :)

Answer 4

可能是 Bs4 引发异常，请在现有脚本中执行以下脚本验证 Bs4 导入是否正常

try:
    from bs4 import BeautifulSoup
except Exception as err:
    raise ImportError('Bs4 is not imported correctly. - {}'.format(err))

Answer 5

我自己不是专家，但请在第一行尝试这样做

import http as http_

因为我在错误消息中看到 python is trying to get client from http module
我猜这是因为有 http 模块和 http 文件夹，其中文件夹包含其他模块（如客户端）