查看模块帮助文档: help(len) -- docs for the built in len function (note here you type "len" not "len()" which would be a call to the function) help(sys) -- overview docs for the sys module (must do an "import sys" first) dir(sys) --
Question: 如何查看正则表达式模块re及其相关函数的意义 1.终端命令行下 python >> import re >> help(re) Help on module re: NAME re - Support for regular expressions (RE). FILE /usr/lib64/python2.7/re.py DESCRIPTION This module provides regular expression matching operation
系统版本信息 装了哪些模块,以及版本信息 select 'Current Application Release: '||ver||' ('||bug||')' "Description" from ( select x.* from (select 1 seq, '1939818' bug,'11.5.0' pv,'11.5.6' ver from dual union select 2,'2123967','11.5.0','11.5.7' from dual union sele