Python之路【第一篇】：Python基础（5）

python 3.2.3及以下版本没有自带tab补全,python 3.5.1自带tab补全模块。

 

#!/usr/bin/env python

# python startup file

import sys

import readline

import rlcompleter

import atexit

import os

# tab completion

readline.parse_and_bind('tab: complete')

# history file

histfile = os.path.join(os.environ['HOME'], '.pythonhistory')

try:

    readline.read_history_file(histfile)

except IOError:

    pass

atexit.register(readline.write_history_file, histfile)

del os, histfile, readline, rlcompleter

 

#for Linux

 

 

import sys

import readline

import rlcompleter

 

if sys.platform == 'darwin' and sys.version_info[0] == 2:

    readline.parse_and_bind("bind ^I rl_complete")

else:

    readline.parse_and_bind("tab: complete")  # linux and python3 on mac

 

#for mac

 

 

>>> import sys

>>> print(sys.path)

['', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/usr/lib64/python2.7/site-packages', '/usr/lib64/python2.7/site-packages/gtk-2.0', '/usr/lib/python2.7/site-packages']

>>>

 

 

自己写的tab.py模块只能在当前目录下导入，如果想在系统的何何一个地方都使用, 要把这个tab.py放到python全局环境变量目录里，一般都放在Python/2.7/site-packages 目录下，这个目录在不同的OS里放的位置不一样，用 print(sys.path) 可以查看python环境变量列表。

 

'',这是代表当前路径，先找当前路径