python 添加tab补全

在平时查看Python方法用到tab补全还是很方便的。

• 1. mac 平台 配置如下：
  • 　　mac是类Unix平台，需要在添加一条配置内容到bash_profile 中（默认是没有这个文件，可以新建一个放在宿主目录下面）
    • 　　先新建一个tab.py的文件内容如下：

    • import rlcompleter,sys,readline
      
      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")

  • 　查看当前系统的Python解释器路径

    Python 2.7. (v2.7.6:3a1db0d2747e, Nov  , ::)
    [GCC 4.2. (Apple Inc. build ) (dot )] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import sys
    >>> sys.path
    ['', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/beautifulsoup4-4.4.1-py2.7.egg', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests-2.9.0-py2.7.egg', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/testkit_lite-3.1.14-py2.7.egg', '/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages', '/Library/Python/2.7/site-packages']

  • 将刚刚新建好的tab.py 文件复制到解释器路径下面，一般放置在‘/Library/Python/2.7/site-packages/’目录下面
    • 　　sudo cp tab.py /Library/Python/2.7/site/packages/
  • 将配置文件的信息写入到 ~/.bash_profile 中，如果文件存在则添加在文件内容后，如果不存在则新建该文件
    • vi ~/.bash_profile    保存退出然后 source ~/.bash_profile   (让该配置文件生效)

    • export PYTHONSTARTUP=/Library/Python/2.7/site-packages/tab.py

　　　　　　　　然后进入Python import tab 用tab则可以列出子方法如下

Python 2.7. (v2.7.6:3a1db0d2747e, Nov  , ::)
[GCC 4.2. (Apple Inc. build ) (dot )] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import tab,sys
>>> sys.
Display all  possibilities? (y or n)
sys.__class__(             sys.__hash__(              sys.__sizeof__(            sys.callstats(             sys.getfilesystemencoding( sys.prefix
sys.__class__(             sys.__init__(              sys.__stderr__             sys.copyright              sys.getprofile(            sys.ps1
sys.__class__(             sys.__init__(              sys.__stdin__              sys.displayhook(           sys.getrecursionlimit(     sys.ps2
sys.__delattr__(           sys.__name__               sys.__stdout__             sys.dont_write_bytecode    sys.getrefcount(           sys.py3kwarning
sys.__delattr__(           sys.__new__(               sys.__str__(               sys.exc_clear(             sys.getsizeof(             sys.setcheckinterval(
sys.__dict__               sys.__new__(               sys.__str__(               sys.exc_info(              sys.gettrace(              sys.setdlopenflags(
sys.__displayhook__(       sys.__package__            sys.__subclasshook__(      sys.exc_type               sys.hexversion             sys.setprofile(
sys.__doc__                sys.__plen                 sys.__subclasshook__(      sys.excepthook(            sys.long_info              sys.setrecursionlimit(
sys.__doc__                sys.__reduce__(            sys._clear_type_cache(     sys.exec_prefix            sys.maxint                 sys.settrace(
sys.__doc__                sys.__reduce__(            sys._current_frames(       sys.executable             sys.maxsize                sys.stderr
sys.__egginsert            sys.__reduce_ex__(         sys._getframe(             sys.exit(                  sys.maxunicode             sys.stdin
sys.__excepthook__(        sys.__reduce_ex__(         sys._mercurial             sys.flags                  sys.meta_path              sys.stdout
sys.__format__(            sys.__repr__(              sys.api_version            sys.float_info             sys.modules                sys.subversion
sys.__format__(            sys.__repr__(              sys.argv                   sys.float_repr_style       sys.path                   sys.version
sys.__getattribute__(      sys.__setattr__(           sys.builtin_module_names   sys.getcheckinterval(      sys.path_hooks             sys.version_info
sys.__getattribute__(      sys.__setattr__(           sys.byteorder              sys.getdefaultencoding(    sys.path_importer_cache    sys.warnoptions
sys.__hash__(              sys.__sizeof__(            sys.call_tracing(          sys.getdlopenflags(        sys.platform
>>> sys.

2.Ubuntu系统的配置文件和Mac有点不一样，同样写入一个tab.py文件到Python解释器路径下，其他的操作都不用,添加的代码如下:

sudo vi /usr/lib/python2./dist-packages/tab.py

import sys,readline,rlcompleter,atexit,os

readline.parse_and_bind('tab: complete')
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