Linux 下python tab键不好使配置

1. Linux Python Tab 自动补全方法：

   新建Python环境变量配置文件：

   vim ~/.pystartup

   # Add auto-completion and a stored history file of commands to your Python

   # interactive interpreter. Requires Python 2.0+, readline. Autocomplete is

   # bound to the Esc key by default (you can change it - see readline docs).

   #

   # Store the file in ~/.pystartup, and set an environment variable to point

   # to it:  "export PYTHONSTARTUP=~/.pystartup" in bash.

   import atexit

   import os

   import readline

   import rlcompleter

   readline.parse_and_bind('tab: complete')

   historyPath = os.path.expanduser("~/.pyhistory")

   def save_history(historyPath=historyPath):

       import readline

       readline.write_history_file(historyPath)

   if os.path.exists(historyPath):

       readline.read_history_file(historyPath)

   atexit.register(save_history)

   del os, atexit, readline, rlcompleter, save_history, historyPath

2. 2

   设置Python环境变量：

   即时生效，重启失效：export PYTHONSTARTUP=~/.pystartup  

   永久生效：echo "export PYTHONSTARTUP=~/.pystartup" >> /etc/profile