Python Add Tab key function

When learning Python, how does not have the TAB key to complete the function, I feel that it will be a nightmare, for us this rookie, just contact Python, to all do not understand, fortunately have predecessors of guidance, study, and record down, have not learned this function small partners!

Environment:

[Email protected] ~]# cat/etc/centos-release
CentOS Linux release 7.4.1708 (Core)
[Email protected] ~]#

Specific process:

[Email protected] site-packages]#python #进入python
Python 2.7.5 (default, 4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "Help", "copyright", "credits" or "license" for more information.
>>>Import sys #导入sys模块
>>>Sys.path #确认系统默认撸觉
[', '/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/lib/python2.7/site-packages ']
>>> exit ()
[Email protected] site-packages]# pwd#进入要放入tab the directory of the. py file (the path above, just put one), I prevent the following directory:
/usr/lib64/python2.7/site-packages

###########################################################

[email protected] site-packages]# cat tab.py
#!/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

###########################################################

[[email protected] site-packages]# python
Python 2.7.5 (default, 4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "Help", "copyright", "credits" or "license" for more information.
>>> Import Tab#使用前先导入tab模块
>>> Import Sys#下面就可以使用tab键了
>>> sys.
Sys.__class__ (sys.__sizeof__ (sys.copyright sys.getfilesystemencoding (sys.prefix
sys.__delattr__ (sys.__stderr__ sys.displayhook (Sys.getprofile (SYS.PS1
sys.__dict__ sys.__stdin__ sys.dont_write_bytecode Sys.getrecursionlimit (sys.ps2
sys.__displayhook__ (sys.__stdout__ sys.exc_clear (Sys.getrefcount (sys.py3kwarning
sys.__doc__ sys.__str__ (Sys.exc_info (sys.getsizeof (sys.pydebug
Sys.__excepthook__ (sys.__subclasshook__ (Sys.exc_type sys.gettrace (Sys.setcheckinterval (
Sys.__format__ (Sys._clear_type_cache (Sys.excepthook (sys.hexversion sys.setdlopenflags (
sys.__getattribute__ (Sys._current_frames (Sys.exec_prefix sys.long_info sys.setprofile (
Sys.__hash__ (Sys._debugmallocstats (sys.executable sys.maxint sys.setrecursionlimit (
Sys.__init__ (Sys._getframe (Sys.exit (Sys.maxsize sys.settrace (
sys.__name__ sys._mercurial Sys.exitfunc (Sys.maxunicode sys.stderr
sys.__new__ (sys.api_version sys.flags sys.meta_path Sys.stdin
sys.__package__ sys.argv sys.float_info sys.modules sys.stdout
sys.__reduce__ (sys.builtin_module_names sys.float_repr_style sys.path sys.subversion
sys.__reduce_ex__ (Sys.byteorder sys.getcheckinterval (sys.path_hooks sys.version
Sys.__repr__ (Sys.call_tracing (sys.getdefaultencoding (Sys.path_importer_cache sys.version_info
Sys.__setattr__ (Sys.callstats (sys.getdlopenflags (Sys.platform sys.warnoptions
>>> sys.

Python Add Tab key function