如何设置python安装路径？

Question

我的 python 2.7 安装在 /usr/local/lib 中。 如果我输入which python2.7，我可以输入/usr/local/bin/python2.7。 然后我在 ~/.bashrc 中将 PYTHONPATH 设置为

export PYTHONPATH="/usr/local/bin/python2.7:$PYTHONPATH"

我喜欢安装 pip 和虚拟环境。 然后尝试了

sudo apt-get install python-pip python-dev python-virtualenv

在/usr/lib寻找python时发现如下错误：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
python-dev is already the newest version.
python-pip is already the newest version.
python-virtualenv is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 362 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up python2.7 (2.7.6-8ubuntu0.2) ...
python2.7: can't open file '/usr/lib/python2.7/py_compile.py': [Errno 2] No such file or directory
dpkg: error processing package python2.7 (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 python2.7
E: Sub-process /usr/bin/dpkg returned an error code (1)

如何正确设置python路径？

编辑： 我的 echo $PATH 给了

/usr/local/bin:/usr/local/cuda-8.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/bin/python2.7

echo $PYTHONPATH 给了

/home/coie/Softwares/apollocaffe/python:/usr/local/bin/python2.7:

Answer 1

我使用>sudo rm -rf /usr/local/lib/python* or libpython* 删除了/usr/local 中安装的所有python。 bin 和 share 文件夹中的那些也被清理。 然后由于所有程序都在/usr里面寻找python，所以安装路径设置为sudo ./configure --prefix = /usr

Answer 2

根据https://askubuntu.com/a/250935/610294：

尝试附加到 PYTHONPATH 而不是完全覆盖它。

阅读：将您添加到 bashrc 的行替换为：

export PYTHONPATH=$PYTHONPATH:/usr/local/bin/python2.7

Answer 3

键入 setenv PATH "$PATH:/usr/local/bin/python" 并按 Enter。 或者 输入 export ATH="$PATH:/usr/local/bin/python" 并按 Enter。