python写一个密码生成器的类，要求有个类变量，统计一下一共生成过多少个密码。 要求有4个方法，1：构造方法 2 实例方法 3 类方法 4 静态方法

Posted 2020-10-30 xiaxiaoxu

生成指定长度的随机数字密码
生成指定长度的随机字母密码
生成指定长度的随机数字和字母的混合

 

#encoding=utf-8

 

import random

import string

class password_generator:

    password_time=0

 

    def __init__(self,length):

        self.length=length

 

    def digital_password(self):

        password_generator.password_time+=1

        s=""

        for i in range(self.length):

            s+=str(random.randint(0,9))

        return s

 

 

    @classmethod

    def letter_password(cls,length):

        password_generator.password_time+=1

        s=""

        for i in range(length):

            s+=str( random.choice(string.letters))

        return s

 

 

 

    @staticmethod

    def letter_mix_digital_password(length):

        password_generator.password_time+=1

        s=""

        s1=""

        nbr=random.randint(0,length)

        for i in range(nbr):

            s+=str( random.choice(string.letters))

        for i in range(length-nbr):

            s1+=str( random.randint(0,9))

        return s+s1

 

 

a=password_generator(10)

print a.length

print a.digital_password()

print password_generator.letter_password(10)

print a.letter_mix_digital_password(10)

 

print "total password:",password_generator.password_time

c:\Python27\Scripts>python task_test.py

10

4775220675

xhqpSYbgGj

TjDIZwuB19

total password: 3