requests 依賴的庫都已經(jīng)安裝了.

Requirement not upgraded as not directly required: chardet<3.1.0,>=3.0.2 in d:\p

ython27\lib\site-packages (from requests) (3.0.4)

Requirement not upgraded as not directly required: certifi>=2017.4.17 in d:\pyth

on27\lib\site-packages (from requests) (2018.4.16)

Requirement not upgraded as not directly required: urllib3<1.23,>=1.21.1 in d:\p

ython27\lib\site-packages (from requests) (1.22)

Requirement not upgraded as not directly required: idna<2.7,>=2.5 in d:\python27

\lib\site-packages (from requests) (2.5)

pip install requests -U

提示

Successfully installed requests-2.18.4

pip 版本

pip 10.0.1 from d:\python27\lib\site-packages\pip (python 2.7)

然后我在 python 執(zhí)行 import requests 報錯:

>>> import requests

D:\Python27\lib\site-packages\requests\__init__.py:80: RequestsDependencyWarning

: urllib3 (1.9.1) or chardet (3.0.4) doesn't match a supported version!

RequestsDependencyWarning)

Traceback (most recent call last):

File "", line 1, in

File "D:\Python27\lib\site-packages\requests\__init__.py", line 90, in

>

from urllib3.exceptions import DependencyWarning

ImportError: cannot import name DependencyWarning

總結(jié)

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