Mac 中同时有三个版本的 Python ， 2.7、3.5 和 3.6，但是 terminal 中无法使用 3.5，而 Pycharm 却可以，请问这是为什么？

不能用是什么意思，你敲 python3.5 回车没反应，还是切到 python3.5 的目录运行不了？

终端下切到 python3.5 安装位置，手动运行下看看


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Pycharm 也不自带 Python3 啊，应该是你给配的环境变量啊什么的用的 3.5

ide 配置的绝对路径，终端里面你也用全路径就行

pyenv

环境变量的问题吧

cd bin
mv python python.bak
ln -s pythonXY python

在 bin 里面的 python* 全都是以软连接的形式存在的 想要改 python 版本自己重建软连接就行了。

环境变量问题

为何不用 virtualenv ？

@kindjef

~ python3.5
zsh: command not found: python3.5

@zhaojjxvi 恩，PyCharm 可以选择 project interpreter，因为之前很多包都装在了 3.5 中

@KeepPro 恩，我试试

@arischow 谢谢

昨天有事没用电脑，多谢各位的热心解答

@Ferrix 应该是 python35 不带点的，你去 /bin 看看就知道了

@LokiSharp 不对。。。是带点的。。。

$ ll python*
lrwxrwxrwx 1 root root 7 Jan 17 21:24 python -> python2
lrwxrwxrwx 1 root root 9 Jan 17 21:24 python2 -> python2.7
-rwxr-xr-x 1 root root 7136 Nov 6 08:29 python2.7
-rwxr-xr-x 1 root root 1835 Nov 6 08:29 python2.7-config
-rwxr-xr-x 1 root root 304 Dec 13 19:49 python2.7-futurize
-rwxr-xr-x 1 root root 308 Dec 13 19:49 python2.7-pasteurize
lrwxrwxrwx 1 root root 16 Jan 17 23:28 python2-config -> python2.7-config
-rwxr-xr-x 1 root root 11312 Dec 29 09:58 python3
-rwxr-xr-x 2 root root 11312 Nov 10 00:27 python3.4
-rwxr-xr-x 2 root root 11312 Nov 10 00:27 python3.4m
-rwxr-xr-x 2 root root 11312 Apr 7 22:35 python3.6
-rwxr-xr-x 2 root root 11312 Apr 7 22:35 python3.6m
lrwxrwxrwx 1 root root 9 Jan 17 23:31 python3.bak -> python3.4
lrwxrwxrwx 1 root root 14 Jan 17 23:28 python-config -> python2-config

➜ /Users/xray887 >which python
/usr/local/bin/python
➜ /Users/xray887 >cd /usr/local/bin
➜ /usr/local/bin >ll python*
lrwxr-xr-x 1 xray887 admin 34B 12 28 20:45 python -> ../Cellar/python/2.7.13/bin/python
lrwxr-xr-x 1 xray887 wheel 71B 11 26 2015 python-32 -> ../../../Library/Frameworks/Python.framework/Versions/2.7/bin/python-32
lrwxr-xr-x 1 xray887 admin 41B 12 28 20:45 python-config -> ../Cellar/python/2.7.13/bin/python-config
lrwxr-xr-x 1 xray887 admin 35B 12 28 20:45 python2 -> ../Cellar/python/2.7.13/bin/python2
lrwxr-xr-x 1 xray887 wheel 72B 11 26 2015 python2-32 -> ../../../Library/Frameworks/Python.framework/Versions/2.7/bin/python2-32
lrwxr-xr-x 1 xray887 admin 42B 12 28 20:45 python2-config -> ../Cellar/python/2.7.13/bin/python2-config
lrwxr-xr-x 1 xray887 admin 37B 12 28 20:45 python2.7 -> ../Cellar/python/2.7.13/bin/python2.7
lrwxr-xr-x 1 xray887 wheel 74B 11 26 2015 python2.7-32 -> ../../../Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7-32
lrwxr-xr-x 1 xray887 admin 44B 12 28 20:45 python2.7-config -> ../Cellar/python/2.7.13/bin/python2.7-config
lrwxr-xr-x 1 xray887 admin 35B 4 28 10:06 python3 -> ../Cellar/python3/3.6.1/bin/python3
lrwxr-xr-x 1 xray887 wheel 72B 11 13 2015 python3-32 -> ../../../Library/Frameworks/Python.framework/Versions/3.5/bin/python3-32
lrwxr-xr-x 1 xray887 admin 42B 4 28 10:06 python3-config -> ../Cellar/python3/3.6.1/bin/python3-config
lrwxr-xr-x 1 xray887 wheel 74B 11 13 2015 python3.5-32 -> ../../../Library/Frameworks/Python.framework/Versions/3.5/bin/python3.5-32
lrwxr-xr-x 1 xray887 admin 37B 4 28 10:06 python3.6 -> ../Cellar/python3/3.6.1/bin/python3.6
lrwxr-xr-x 1 xray887 admin 44B 4 28 10:06 python3.6-config -> ../Cellar/python3/3.6.1/bin/python3.6-config
lrwxr-xr-x 1 xray887 admin 38B 4 28 10:06 python3.6m -> ../Cellar/python3/3.6.1/bin/python3.6m
lrwxr-xr-x 1 xray887 admin 45B 4 28 10:06 python3.6m-config -> ../Cellar/python3/3.6.1/bin/python3.6m-config
lrwxr-xr-x 1 xray887 admin 35B 12 28 20:45 pythonw -> ../Cellar/python/2.7.13/bin/pythonw
lrwxr-xr-x 1 xray887 wheel 72B 11 26 2015 pythonw-32 -> ../../../Library/Frameworks/Python.framework/Versions/2.7/bin/pythonw-32
lrwxr-xr-x 1 xray887 admin 36B 12 28 20:45 pythonw2 -> ../Cellar/python/2.7.13/bin/pythonw2
lrwxr-xr-x 1 xray887 wheel 73B 11 26 2015 pythonw2-32 -> ../../../Library/Frameworks/Python.framework/Versions/2.7/bin/pythonw2-32
lrwxr-xr-x 1 xray887 admin 38B 12 28 20:45 pythonw2.7 -> ../Cellar/python/2.7.13/bin/pythonw2.7
lrwxr-xr-x 1 xray887 wheel 75B 11 26 2015 pythonw2.7-32 -> ../../../Library/Frameworks/Python.framework/Versions/2.7/bin/pythonw2.7-32