python PYTHONPATH的設置

設置不當會導致錯誤：

ImportError: No module named CrazyMonitorClient.core

方法一：
vi ~/.bashrc
輸入：export PYTHONPATH=/home/zm/PycharmProjects/CrazyMonitor_py2/:$PYTHONPATH

source ～/.bashrc 

pS：當然在/etc/enviroment  /etc/profile 下更改都行。

>>> import sys
>>> sys.path
['', '/home/zm/PycharmProjects/CrazyMonitor_py2', '/home/zm/\xe6\xa1\x8c\xe9\x9d\xa2', '/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', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client']
---->添加成功，sys.path[0]是''，表示當前目錄

方法二：

在客戶端程序的bin文件夾下的主執行文件里添加：

import os
import sys

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR) 

print(os.path.abspath(__file__))
print(os.path.dirname(os.path.abspath(__file__)))
print(BASE_DIR)

print(sys.path)

---->執行結果：

/home/zm/PycharmProjects/save/bengle.py
/home/zm/PycharmProjects/save
/home/zm/PycharmProjects

[ '/home/zm/PycharmProjects/save', '/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', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/home/zm/\xe4\xb8\x8b\xe8\xbd\xbd/pycharm-2018.2.3/helpers/pycharm_matplotlib_backend', '/home/zm/PycharmProjects']