python2和3共存時pip安裝的問題
安裝有python2和python3多版本的情況下,我們使用pip安裝模塊容易出問題:
[root@python ~]# python -m pip install psutil
Collecting psutil
Downloading psutil-5.4.1.tar.gz (408kB)
Installed /usr/local/python3/lib/python3.6/site-packages/psutil-5.4.0-py3.6-linux-x86_64.egg
Processing dependencies for psutil==5.4.0
Finished processing dependencies for psutil==5.4.0
[root@python psutil-5.4.0]# python
Python 3.6.3 (default, Nov 9 2017, 00:02:58)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import psutil
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/root/psutil-5.4.0/psutil/__init__.py", line 93, in <module>
from . import _pslinux as _psplatform
File "/root/psutil-5.4.0/psutil/_pslinux.py", line 26, in <module>
from . import _psutil_linux as cext
ImportError: cannot import name ‘_psutil_linux‘
這個錯誤,並不是沒有psutil模塊報的錯,而是因為我的系統裏面裝了python2和python3,所以在使用pip安裝的時候,會安裝到2裏面,導致了這個報錯
當我們安裝了2和3的時候,使用pip安裝模塊的時候,需要在pip之前聲明是2還是3
[root@python ~]# python -m pip install psutil #我的系統裏面有python2.7和python3.6,python就是3.6版本
Collecting psutil
Downloading psutil-5.4.1.tar.gz (408kB)
.....................
97% |███████████████████████████████▎| 399kB 738kB/s eta 0:00 100% |████████████████████████████████| 409kB 539kB/s
Installing collected packages: psutil
Running setup.py install for psutil ... done
Successfully installed psutil-5.4.1
[root@python ~]# python
Python 3.6.3 (default, Nov 9 2017, 00:02:58)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import psutil
>>>
我在pip前面使用python聲明我當前使用的是3,而不是python2.7,這樣安裝就正常了.
PS:個人之見,如果有錯誤的地方,歡迎大家指正
本文出自 “一路向上” 博客,請務必保留此出處http://zhenghong.blog.51cto.com/1676992/1980181
python2和3共存時pip安裝的問題