python 找不到 numpy

Question

我试图按照此链接中的说明进行操作:http://www.thisisthegreenroom.com/2011/installing-python-numpy-scipy-matplotlib-and-ipython-on-lion/ 然而，我的 python 似乎找不到 Numpy、Scipy 和我使用 pip 安装的所有东西。

现在，当我输入 which python 时，它会显示 /usr/local/bin/python。 但是，当我输入

  pip install numpy

显示

Requirement already satisfied (use --upgrade to upgrade): numpy in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python. 

因此它们似乎在不同的目录中，可能我之前安装了 numpy，这使得 pip 一直告诉我它们已安装。我想知道有什么办法吗？

更新，我试过导入它。

    import numpy
    Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    ImportError: No module named numpy

我也尝试过卸载 numpy 并重新安装。但是，当我卸载它时。它仍然给我错误。

    applematoMacBook-Air:~ apple$ pip uninstall numpy
    DEPRECATION: Uninstalling a distutils installed project (numpy) has been     deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
    Uninstalling numpy-1.8.0rc1:
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy-1.8.0rc1-py2.7.egg-info
    Proceed (y/n)? y
    Exception:
    Traceback (most recent call last):
    File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/basecommand.py", line 246, in main
    status = self.run(options, args)
    File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/commands/uninstall.py", line 70, in run
    requirement_set.uninstall(auto_confirm=options.yes)
    File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/req/req_set.py", line 274, in uninstall
    req.uninstall(auto_confirm=auto_confirm)
    File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/req/req_install.py", line 730, in uninstall
  paths_to_remove.remove(auto_confirm)
    File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/req/req_uninstall.py", line 126, in remove
    renames(path, new_path)
    File "/usr/local/lib/python2.7/site-packages/pip-6.1.1-py2.7.egg/pip/utils/__init__.py", line 292, in renames
  shutil.move(old, new)
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 302, in move
    os.unlink(src)
  OSError: [Errno 13] Permission denied: '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy-1.8.0rc1-py2.7.egg-info'

Answer 1

似乎您正在使用的 pip 版本正在使用默认的 mac 系统级 python 解释器 /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python 而不是安装在 /usr/local/bin 中的那个。

在我开始使用 homebrew 之前，我几乎遇到过同样的问题。 .我建议在 brew and python 上查看此页面.您可能需要删除 pip 并从 brew 重新安装它。顺便说一句，使用 brew，不需要 sudo。