Question

我试图开始一个python项目，我需要一些数据科学库，并被指示安装Anaconda。安装后，我意识到我不想要它，因此我尝试将其卸载。

现在我正在尝试安装带有pip的软件包，但是我想pip尚未安装，或者我的路径现在已经不合时宜了，我很困惑，因为python在多个地方。

在/Library/Python中，我有一个2.6和2.7文件夹，都只包含Extras.pth和README

在/usr/local/bin中，我有python2 python2-config python2.7 python2.7-config pythonw2 pythonw2.7
这显然是Pipenv环境吗？当我在PyCharm /usr/local/bin/python2.7中创建一个新项目时，它就是要使用的目录。

还有python

/usr/local/opt/python
/usr/loca/opt/python2
/usr/local/Cellar/python/2.7.13_1/

我的问题是，当我想用pip安装任何东西时

-bash: pip: command not found

我运行sudo easy_install pip时得到

Searching for pip
Reading https://pypi.python.org/simple/pip/
Download error on https://pypi.python.org/simple/pip/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
Couldn't find index page for 'pip' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
Download error on https://pypi.python.org/simple/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
No local packages or download links found for pip
error: Could not find suitable distribution for Requirement.parse('pip')

运行which python会得到/usr/bin/python

所以现在我对哪个目录是python以及如何让pip再次工作感到困惑。

在/usr/local/Cellar/python/2.7.13_1/bin/pip的Homebrew安装中，我唯一知道pip存在并起作用的地方

有人可以帮我解决这个问题吗？

Answer 1

这可能需要一些迭代才能回答，但我会尝试。不幸的是，我的声誉还不允许评论：（

首先，我将检查PATH环境变量：

$ echo $PATH
/Library/Frameworks/Python.framework/Versions/3.6/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

就我而言，PATH中的第一件事是python.org中的python 3.6，然后是其他标准路径。

我在/Library/Python/2.7/site-packages中还安装了Extras.pth和README，以及其他已安装的软件包。

/ usr / bin / python中的python应该是与OSX一起安装的默认python。

您安装的所有其他python都将位于/ usr / local / bin中。您可以通过完整列出来找出符号链接指向的位置

$ ls -al /usr/local/bin/python*
lrwxr-xr-x  1 username  wheel  38 Jun 21 10:21 /usr/local/bin/python -> ../Cellar/python@2/2.7.15_1/bin/python
lrwxr-xr-x  1 username  wheel  45 Jun 21 10:21 /usr/local/bin/python-config -> ../Cellar/python@2/2.7.15_1/bin/python-config
lrwxr-xr-x  1 username  wheel  39 Jun 21 10:21 /usr/local/bin/python2 -> ../Cellar/python@2/2.7.15_1/bin/python2
lrwxr-xr-x  1 username  wheel  46 Jun 21 10:21 /usr/local/bin/python2-config -> ../Cellar/python@2/2.7.15_1/bin/python2-config
lrwxr-xr-x  1 username  wheel  41 Jun 21 10:21 /usr/local/bin/python2.7 -> ../Cellar/python@2/2.7.15_1/bin/python2.7
lrwxr-xr-x  1 username  wheel  48 Jun 21 10:21 /usr/local/bin/python2.7-config -> ../Cellar/python@2/2.7.15_1/bin/python2.7-config
lrwxr-xr-x  1 root  wheel  69 Aug  6 22:31 /usr/local/bin/python3 -> ../../../Library/Frameworks/Python.framework/Versions/3.6/bin/python3
lrwxr-xr-x  1 root  wheel  76 Aug  6 22:31 /usr/local/bin/python3-config -> ../../../Library/Frameworks/Python.framework/Versions/3.6/bin/python3-config
lrwxr-xr-x  1 root  wheel  71 Aug  6 22:31 /usr/local/bin/python3.6 -> ../../../Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6
lrwxr-xr-x  1 root  wheel  78 Aug  6 22:31 /usr/local/bin/python3.6-config -> ../../../Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6-config
lrwxr-xr-x  1 root  wheel  72 Aug  6 22:31 /usr/local/bin/python3.6m -> ../../../Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6m
lrwxr-xr-x  1 root  wheel  79 Aug  6 22:31 /usr/local/bin/python3.6m-config -> ../../../Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6m-config
lrwxr-xr-x  1 username  wheel  39 Jun 21 10:21 /usr/local/bin/pythonw -> ../Cellar/python@2/2.7.15_1/bin/pythonw
lrwxr-xr-x  1 username  wheel  40 Jun 21 10:21 /usr/local/bin/pythonw2 -> ../Cellar/python@2/2.7.15_1/bin/pythonw2
lrwxr-xr-x  1 username  wheel  42 Jun 21 10:21 /usr/local/bin/pythonw2.7 -> ../Cellar/python@2/2.7.15_1/bin/pythonw2.7

就我而言，我已经安装了Homebrew python 2.7.15（以Cellar开头的任何版本）和Python.org 3.6（以/Library/Frameworks开头）

所以...回到您想做的事情。

如果要运行Homebrew python，请在提示符下键入python2。如果要运行OSX python，请输入python。

如果要将Homebrew作为默认名称运行，只需键入python，就必须在/ usr / local / bin中添加符号链接，类似于我清单中的前两行，以便于查找在/ usr / bin之前的路径中（您将覆盖python命令）。

我不确定您的easy_install为何失败，但是which easy_install可能会告诉您，这也仅指向easy_install的OSX python安装版本。

我希望对您有帮助吗？不幸的是，由于我已经安装了pip，因此无法复制您的错误。

Mac OS Python安装混乱

1 个答案: