python中使用tab補全
- 2020 年 1 月 6 日
- 筆記
要能夠使用import tab，最主要的是要有readline模組。默認python2.6雖然沒有裝tab模組，但是裝了readline模組的。如下：
[root@90-163 robin]# python2.6 Python 2.6.6 (r266:84292, Nov 22 2013, 12:16:22) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import tab Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named tab >>> import readline
>>>
而python2.7默認tab模組和readline模組都沒有安裝
[root@90-163 robin]# python Python 2.7.5 (default, Apr 16 2015, 15:21:18) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import tab Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named tab >>> import readline Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named readline
python2.6能夠import readline成功的原因是因為有這個模組：/usr/lib64/python2.6/lib-dynload/readline.so （默認安裝就有的），python2.7.5不能import readline成功的原因就是沒有這個模組。所以將這個模組cp到python2.7的相關目錄下既可以了。操作如下：
[root@90-163 lib-dynload]# cp /usr/lib64/python2.6/lib-dynload/readline.so /usr/local/lib/python2.7/lib-dynload/ [root@90-163 lib-dynload]# python Python 2.7.5 (default, Apr 16 2015, 15:21:18) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import readline >>>
然後在/usr/local/lib/python2.7/site-packages 添加一個tab.py文件即可使用import tab，內容如下；
[root@90-163 site-packages]# pwd /usr/local/lib/python2.7/site-packages [root@90-163 site-packages]# cat tab.py
try: import readline except ImportError: print("Module readline not available.")
else: import rlcompleter readline.parse_and_bind("tab: complete")
進行測試：
>>> import readline >>> import tab >>> import os >>> os.w os.wait( os.wait3( os.wait4( os.waitpid( os.walk( os.write(
