python基础，构建一个301个字典库

user_list = []
i = 0
while i <= 300:
    name = 'alex -%d' %(i+1)
    eml = 'alex%d@live.com'%(i+1)
    pwd = 'pwd%d' %(i+1)
    dict = {}
    dict ["username"] = name
    dict ["emal"] = eml
    dict ["password"] = pwd
    user_list.append(dict)
    i += 1
for data in user_list:
    print(data)

while True:
    user_choice = input("请输入页码：")
    user_choice.strip()
    if user_choice.isdecimal():
        user_choice = int(user_choice)
        if user_choice > 0 and user_choice <= int(len(user_list)/10+1):
            min = user_choice*10-10
            max = user_choice*10-1
            if max>300:
                max = 300
            start = min
            while start <= max:
                print(user_list[start])
                start += 1
        else:
            print("你输入的页码不存在")
    else:
        print("请重新输入")