Virtualenv venv失敗，出現以下錯誤

Question

我是Python開發新手，我試圖在項目目錄中安裝virtualenv。

不過，我有以下錯誤：

Installing collected packages: pip, setuptools 

    Exception: 
    Traceback (most recent call last): 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/basecommand.py", line 232, in main 
     status = self.run(options, args) 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/commands/install.py", line 347, in run 
     root=options.root_path, 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/req/req_set.py", line 549, in install 
     **kwargs 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/req/req_install.py", line 754, in install 
     self.move_wheel_files(self.source_dir, root=root) 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/req/req_install.py", line 963, in move_wheel_files 
     isolated=self.isolated, 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/wheel.py", line 234, in move_wheel_files 
     clobber(source, lib_dir, True) 
    File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/wheel.py", line 212, in clobber 
     shutil.copyfile(srcfile, destfile) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 82, in copyfile 
     with open(dst, 'wb') as fdst: 
    IOError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pip/__init__.py' 

---------------------------------------- 
...Installing setuptools, pip...done. 
Traceback (most recent call last): 
    File "/usr/local/bin/virtualenv", line 11, in <module> 
    sys.exit(main()) 
    File "/Library/Python/2.7/site-packages/virtualenv.py", line 825, in main 
    symlink=options.symlink) 
    File "/Library/Python/2.7/site-packages/virtualenv.py", line 993, in create_environment 
    install_wheel(to_install, py_executable, search_dirs) 
    File "/Library/Python/2.7/site-packages/virtualenv.py", line 961, in install_wheel 
    'PIP_NO_INDEX': '1' 
    File "/Library/Python/2.7/site-packages/virtualenv.py", line 903, in call_subprocess 
    % (cmd_desc, proc.returncode)) 
OSError: Command /Users/alexandrurada...oard/venv/bin/python -c "import sys, pip; sys...d\"] + sys.argv[1:]))" setuptools pip failed with error code 2 

我安裝PIP與

easy_install pip

然後我安裝的virtualenv與

pip install virtualenv

沒有任何錯誤。不過，我仍然得到這個。我不想用sudo嘗試它。我是不是該？

更新：我安裝了sudo，我擺脫了這個錯誤。但是另外一個嘗試與PIP安裝的東西時：

air:dashboard alexandrurada$ pip install flask 

-bash：在/ usr/local/bin目錄/ PIP： 「path_here」：壞的解釋：沒有這樣的文件或目錄

更新2：之前的錯誤是因爲目錄名稱中有空格。看起來路徑不適用於這些名稱。

反正，現在我得到的錯誤是

File "/usr/local/bin/pip", line 7, in <module> 
    from pip import main 
ImportError: No module named pip 

我檢查了我的/ usr/local/bin目錄/畫中畫和文件是否存在。

Answer 1

您需要sudo pip install virtualenv全球安裝virtualenv。當設置你的virtualenvs時，確保你在試圖安裝前，確保你沒有使用sudo並且你激活你的virtualenv。

[Errno 13] Permission denied:表示您沒有寫入權限。

Answer 2

安裝較新版本的pip並避免使用easy_install。

下載點子來自：https://bootstrap.pypa.io/get-pip.py

，然後在其上運行的Python：

$ python get-pip.py 

如果你想安裝pip爲全局路徑，你可能要運行使用sudo去年命令。在不使用sudo的情況下，pip將被安裝以供任何Python解釋器在您的路徑中使用。

從這裏，你可以用PIP安裝的virtualenv：

$ pip install virtualenv 

從你的反應，好像你想通過讓您的系統在已知狀態下提供最好的服務：下載該文件，然後運行sudo python get-pip.py所以你正在運行一個已知的pip安裝。