python环境下使用tab自动补全命令

# vim /usr/lib/python2.7/dist-packages/tab.py

加入如下内容：

#!/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



测试：

# python
Python 2.7.3 (default, Aug 1 2012, 05:16:07)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> import tab
>>> sys.
sys.__class__( sys.argv sys.hexversion
sys.__delattr__( sys.builtin_module_names sys.long_info
sys.__dict__ sys.byteorder sys.maxint
sys.__displayhook__( sys.call_tracing( sys.maxsize
sys.__doc__ sys.callstats( sys.maxunicode
sys.__excepthook__( sys.copyright sys.meta_path
sys.__format__( sys.displayhook( sys.modules
sys.__getattribute__( sys.dont_write_bytecode sys.path
sys.__hash__( sys.exc_clear( sys.path_hooks
sys.__init__( sys.exc_info( sys.path_importer_cache
sys.__name__ sys.exc_type sys.platform
sys.__new__( sys.excepthook( sys.prefix
sys.__package__ sys.exec_prefix sys.ps1
sys.__reduce__( sys.executable sys.ps2
sys.__reduce_ex__( sys.exit( sys.py3kwarning
sys.__repr__( sys.exitfunc( sys.pydebug
sys.__setattr__( sys.flags sys.setcheckinterval(
sys.__sizeof__( sys.float_info sys.setdlopenflags(
sys.__stderr__ sys.float_repr_style sys.setprofile(
sys.__stdin__ sys.getcheckinterval( sys.setrecursionlimit(
sys.__stdout__ sys.getdefaultencoding( sys.settrace(
sys.__str__( sys.getdlopenflags( sys.stderr
sys.__subclasshook__( sys.getfilesystemencoding( sys.stdin
sys._clear_type_cache( sys.getprofile( sys.stdout
sys._current_frames( sys.getrecursionlimit( sys.subversion
sys._getframe( sys.getrefcount( sys.version
sys._mercurial sys.getsizeof( sys.version_info
sys.api_version sys.gettrace( sys.warnoptions