Linux:CentOS7 python: 系统默认python版本2.7,利用python启动 自己安装python版本3.8,利用python3启动 问题描述: 在上述环境中利用virtualenvwrapper创建虚拟环境时,发生以下错误 /usr/bin/python: No module named virtualenvwrapper virtualenvwrapper.sh: There was a problem running the initialization hooks.
regular expressions (RE) 简介 re模块是python中处理正在表达式的一个模块 r"""Support for regular expressions (RE). This module provides regular expression matching operations similar to those found in Perl. It supports both 8-bit and Unicode strings; both the
Click Module(一) ----xiaojikuaipao The following material was from the website : http://click.pocoo.org/4/ 1. click Arguments website: http://click.pocoo.org/4/arguments/ Arguments work similarly to op
Recall that every python module has a built_in __name__ variable that python sets to the __main__ string only when the file is run as a program,not when it's imported as library so in the python fiel if __name__ == "__main__" : .... is the top-l
when setting python environment in Ubuntu13.04, i got this error: ImportError: No module named _sysconfigdata_nd After searching from google, i found that The "No module named _sysconfigdata_nd" is a bug in the Ubuntu package. so, here is the so
def func(listNode): listNode.reverse() for i in listNode: print(i) li = [1,2,3,4,5] func(li) 利用python列表函数reverse()将列表倒叙,然后遍历打印,但是这有一个缺点就是改变了原列表的顺序.看看下面的代码: def func(listNode): array = listNode[::-1] for i in array: print(i) li = [1,2,3,4,5] func(li)
