Linux中Python環境變數的設定

這種新增python path環境變數的方式，只在當前指令碼程式範圍內起作用。若要在整個linux環境中起作用，就要新增設定linux的pythonpath變數。

jxj@ubuntu1

:~/tffrcnn
$ python
python
2.7.12 (default, nov
192016, 06:48
:10) 
[gcc
5.4.0
20160609] on linux2
type
or"license"
for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/pilcompat']
>>> sys.path.insert(0, '/home/jxj/tffrcnn')
>>> sys.path
['/home/jxj/tffrcnn', '', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/pilcompat']
>>> quit()
jxj@ubuntu1
:~/tffrcnn
$ jxj@ubuntu1
:~/tffrcnn
$ python
python
2.7.12 (default, nov
192016, 06:48
:10) 
[gcc
5.4.0
20160609] on linux2
type
or"license"
for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/pilcompat']

jxj@ubuntu1

:~/tffrcnn
$ export pythonpath="/home/jxj/tffrcnn:$pythonpath"
jxj@ubuntu1
:~/tffrcnn
$ echo $pythonpath
/home/jxj/tffrcnn
:jxj@ubuntu1
:~/tffrcnn
$ python
python
2.7.12 (default, nov
192016, 06:48
:10) 
[gcc
5.4.0
20160609] on linux2
type
or"license"
for more information.
>>> import sys
>>> sys.path
['', '/home/jxj/tffrcnn', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/pilcompat']
>>> quit()

jxj@ubuntu1

:~$ nl .bashrc | tail
87# enable programmable completion features (you don't need to enable
88# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
89# sources /etc/bash.bashrc).
90if ! shopt -oq posix; then
91if [ -f /usr/share/bash-completion/bash_completion ]; then
92      . /usr/share/bash-completion/bash_completion
93    elif [ -f /etc/bash_completion ]; then
94      . /etc/bash_completion
95    fi
96  fi
jxj@ubuntu1
:~$ 
jxj@ubuntu1
:~$ vim .bashrc 
jxj@ubuntu1
:~$ 
jxj@ubuntu1
:~$ nl .bashrc | tail
89# sources /etc/bash.bashrc).
90if ! shopt -oq posix; then
91if [ -f /usr/share/bash-completion/bash_completion ]; then
92      . /usr/share/bash-completion/bash_completion
93    elif [ -f /etc/bash_completion ]; then
94      . /etc/bash_completion
95    fi
96  fi
97  export pythonpath="/home/jxj/tffrcnn:$pythonpath"
jxj@ubuntu1
:~$ source .bashrc

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