爲什麼在virtualenv中寫入/ usr/lib的pip？

我在稍微老一點的操作系統上運行Python，其系統Python版本爲2.6。因此，我已將2.7安裝在我的主目錄中，並使用該Python來獲取pip，並使用該pip來安裝virtualenvwrapper。所以，我有爲什麼在virtualenv中寫入/ usr/lib的pip？

$ which python pip virtaulenv virtualenvwrapper.sh 
/home/user/bin/python 
/home/user/bin/pip 
/home/user/.local/bin/virtualenv 
/home/user/.local/bin/virtualenvwrapper.sh

我使用這些工具來創建的virtualenv，並嘗試安裝模塊

$ mkvirtualenv fred 
New python executable in fred/bin/python2.7.10 
Also creating executable in fred/bin/python 
Installing setuptools, pip, wheel...done. 
virtualenvwrapper.user_scripts creating /home/user/.virtualenvs/fred/bin/predeactivate 
virtualenvwrapper.user_scripts creating /home/user/.virtualenvs/fred/bin/postdeactivate 
virtualenvwrapper.user_scripts creating /home/user/.virtualenvs/fred/bin/preactivate 
virtualenvwrapper.user_scripts creating /home/user/.virtualenvs/fred/bin/postactivate 
virtualenvwrapper.user_scripts creating /home/user/.virtualenvs/fred/bin/get_env_details 

$ workon fred 
$ export PYTHONPATH=/home/user/.virtualenvs/fred/lib/python2.7/site-packages 
$ /home/user/.virtualenvs/fred/bin/easy_install --prefix=/home/user/.virtualenvs/fred pip 
Creating /home/user/.virtualenvs/fred/lib/python2.7/site-packages/site.py 
Searching for pip 
Best match: pip 7.1.2 
Adding pip 7.1.2 to easy-install.pth file 
Installing pip script to /home/user/.virtualenvs/fred/bin 
Installing pip3.4 script to /home/user/.virtualenvs/fred/bin 
Installing pip3 script to /home/user/.virtualenvs/fred/bin 

Using /home/user/.virtualenvs/fred/lib/python2.7/site-packages                           
Processing dependencies for pip 
Finished processing dependencies for pip 

$ which python pip 
/home/user/.virtualenvs/fred/bin/python 
/home/user/.virtualenvs/fred/bin/pip 

$ pip install itsdangerous 
Collecting itsdangerous 
Installing collected packages: itsdangerous 

Exception: 
Traceback (most recent call last): 
    File "/home/user/.local/lib/python2.7/site-packages/pip/basecommand.py", line 211, in main 
    status = self.run(options, args) 
    File "/home/user/.local/lib/python2.7/site-packages/pip/commands/install.py", line 311, in run 
    root=options.root_path, 
    File "/home/user/.local/lib/python2.7/site-packages/pip/req/req_set.py", line 646, in install 
    **kwargs 
    File "/home/user/.local/lib/python2.7/site-packages/pip/req/req_install.py", line 803, in install 
    self.move_wheel_files(self.source_dir, root=root) 
    File "/home/user/.local/lib/python2.7/site-packages/pip/req/req_install.py", line 998, in move_wheel_files 
    isolated=self.isolated, 
    File "/home/user/.local/lib/python2.7/site-packages/pip/wheel.py", line 341, in move_wheel_files 
    clobber(source, lib_dir, True) 
    File "/home/user/.local/lib/python2.7/site-packages/pip/wheel.py", line 319, in clobber 
    shutil.copyfile(srcfile, destfile) 
    File "/usr/lib64/python2.7/shutil.py", line 83, in copyfile 
    with open(dst, 'wb') as fdst: 
IOError: [Errno 13] Permission denied: '/usr/lib/python2.7/site-packages/itsdangerous.py'

爲什麼PIP試圖安裝模塊到/ usr/lib目錄？不應該將它安裝到~/.virtualenvs/fred/lib或~/lib？

來源

2015-10-14 jalanb

你的'.pip/pip.conf'是什麼？ – sobolevn

不一定是一種解決方案，但您可能能夠在用戶級別安裝軟件包。 'pip install --user itsdangerous' – ThorSummoner

@ThorSummoner - 因爲我需要它安裝在virtualenv中，所以不能使用'--user'，而不是〜/ .local – jalanb

-8

如果你有密碼做到這一點：

第1步打開終端輸入sudo su，然後按回車，現在請鍵入密碼終端的用戶切換到root時
步驟2型pip install itsdangerous然後按回車鍵

來源

2017-03-16 23:23:08

爲什麼在virtualenv中寫入/ usr/lib的pip？

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