day 09 作业

import random
# 1.将登陆注册的代码改成函数的写法
def a():
    print("欢迎来到登录界面")
    name = input("请输入用户名：")
    password = input("请输入密码：")
    a = {name: password}
    for i, j in database.items():
        if a == {i: j}:
            print("登录成功")
    if a != {i: j}:
        print("账号或密码错误，请重新输入")

def b():
    while True:
        print("欢迎来到注册界面\n不需要注册输入：0")
        name = input("请输入用户名：")
        if name == "0":
            print("退出注册\n")
            break
        password = input("请输入密码：")
        for i in database.keys():
            if name == i:
                print("此账户已被注册\n")
                break
        if name != i:
            database.setdefault(name, password)
            print("注册成功")
            break

database = {" ": " "}
while True:
    choice = int(input("网站登录界面\n1：登录\n2：注册\n3：退出\n请选择："))
    if choice == 1:
        a()
    if choice == 2:
        b()
    if choice == 3:
        print("退出成功")
        break

# 2.设计一个函数，统计一个字符串中出现频率最高的字符(单个符号)及其出现次数
str1 = input("请输入：")
def hanshu():
    top = 0
    count = 0
    num = 0
    while num < len(str1):
        if count < str1.count(str1[num]):
            count = str1.count(str1[num])
            top = str1[num]
        num += 1
    print("频率最高的字符为", '\"', top, '\"')
    print("出现", count, "次")
hanshu()

# 3.设计一个函数，根据指定长度生成对应的验证码（由数字和大小写英文字母构成的随机字符串）长度由用户去输入。
import random
username = input("请输入需要生成多少位的验证码:")
scq = []
def asd():
    count = 1
    while count <= int(username):
        a = random.randint(48, 122)
        if (47 < a < 58) or (64 < a < 91) or (96 < a < 123):
            scq.append(chr(a))
            count += 1
        else:
            continue
asd()
for i in scq:
    print(i, end="")

函数生产验证码方法

import random, string
count = input("输入：")
shu_ju = string.ascii_letters + string.digits
d = []
for i in range(0, int(count)):
    b = random.choices(shu_ju)
    d = b + d
for i in d:
    print(i, end="")