Python 中的tab补全

用Python时候没有TAB补全，挺痛苦的，以下是添加方法

1.准备一个Python脚本 cat > tab.py <<EOF
#!/usr/local/bin/python
# python tab 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
EOF

2.查看Python默认的模块存放位置

[root@victor python2.7]# python
Python 2.7.6 (default, Sep 17 2017, 04:41:33)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/local/lib/python27.zip', '/usr/local/lib/python2.7', '/usr/local/lib/python2.7/plat-linux2', '/usr/local/lib/python2.7/lib-tk', '/usr/local/lib/python2.7/lib-old', '/usr/local/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/site-packages']

3.拷贝到目录下
cp tab.py /usr/local/lib/python2.7

4.现在可以用了

[root@victor python]# cp tab.py /usr/local/lib/python2.7
[root@victor python]# python
Python 2.7.6 (default, Sep 17 2017, 04:41:33)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tab
>>> import sys
>>> sys.
sys.__class__(              sys.__sizeof__(             sys.displayhook(            sys.getprofile(             sys.ps1
sys.__delattr__(            sys.__stderr__              sys.dont_write_bytecode     sys.getrecursionlimit(      sys.ps2
sys.__dict__                sys.__stdin__               sys.exc_clear(              sys.getrefcount(            sys.py3kwarning
sys.__displayhook__(        sys.__stdout__              sys.exc_info(               sys.getsizeof(              sys.setcheckinterval(
sys.__doc__                 sys.__str__(                sys.exc_type                sys.gettrace(               sys.setdlopenflags(
sys.__excepthook__(         sys.__subclasshook__(       sys.excepthook(             sys.hexversion              sys.setprofile(
sys.__format__(             sys._clear_type_cache(      sys.exec_prefix             sys.long_info               sys.setrecursionlimit(
sys.__getattribute__(       sys._current_frames(        sys.executable              sys.maxint                  sys.settrace(
sys.__hash__(               sys._getframe(              sys.exit(                   sys.maxsize                 sys.stderr
sys.__init__(               sys._mercurial              sys.exitfunc(               sys.maxunicode              sys.stdin
sys.__name__                sys.api_version             sys.flags                   sys.meta_path               sys.stdout
sys.__new__(                sys.argv                    sys.float_info              sys.modules                 sys.subversion
sys.__package__             sys.builtin_module_names    sys.float_repr_style        sys.path                    sys.version
sys.__reduce__(             sys.byteorder               sys.getcheckinterval(       sys.path_hooks              sys.version_info
sys.__reduce_ex__(          sys.call_tracing(           sys.getdefaultencoding(     sys.path_importer_cache     sys.warnoptions
sys.__repr__(               sys.callstats(              sys.getdlopenflags(         sys.platform                
sys.__setattr__(            sys.copyright               sys.getfilesystemencoding(  sys.prefix