run some tasks which could look like CRON within linux/UNIX in python. Here's a demo which run on ubuntu12.04 sudo pip install apscheduler then 1) run a task at determained time 指定时间运行某个程序 2) run a task every period 指定周期运行某个程序 For 1) here is a
def get_pwd(str, num):#str为可选字符集,num为密码长度 if(num == 1): for x in str: yield x else: for x in str: for y in get_pwd(str, num-1): yield x+y strKey=""#可选字符集 for i in range(33,127):#所有可见字符 strKey+=chr(i) for x in get_pwd(strKey,17): #x+="0823}&
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python语言是编程中使用率在Top 3之内的语言.python语言以灵活与简单著称,那么越是灵活的语言越需要判断出错的功力. 简单示例 以下是一个简单的错误程序,被除数不可为0,那么看看该代码的执行. a = b = c = a / b print c 出错报告是:在文件error_three.py 的第5行 c = a / b报错,原因是整数除法或者取模运算的被除数为0 解释异常被捕获的流程:当程序运行到 c = a / b时,有异常产生,然后python解释器就捕获了该异常,并判断异常的