day02 文件处理和函数基础

╰半夏微凉° 2021-12-10 01:47 192阅读 0赞

以下是今日学习主要内容
    # # 1.数据类型剩余内置方法
    # # 2.字符编码

# 说明：本程序在注册基础上写出，目的是提升文件操作和字符处理能力，锻炼逻辑能力
    def login():
        with open('吴迎峰.txt','r',encoding = 'utf-8') as f:
            res = f.read()
            print(res.split(';'))
        username, password = res.split(';')
        while True:
            i = 1
            j = 4
    
            while i:
                user = input('请输入用户名：').strip()
                if user == username:
                    while j:
                        pwd = input('请输入密码：').strip()
                        if pwd == password:
                            print('登陆成功')
                            break
                        else:
                            j -= 1
                            if j > 1:
                                print('请重新输入密码')
                            else:
                                print('请重新输入用户名')
                                break
                    i = 0
                else:
                    print('用户名不存在')
    login()

# # 3.文件处理
    # # 4.函数基础
    #
    # # 需要掌握的方法
    # list1 = ["lee",21,"boss","zym",[1,2,3]]
    #
    # # insert()
    # # 第一个参数：索引，第二个参数，插入内容
    # # list1.insert(3,"zym")
    # print(list1)
    #
    # # pop()
    #
    # # remove()
    #
    # # count()
    # print(list1.count("zym"))
    #
    # # index()
    # print(list1.index(21))
    #
    # # copy()    浅拷贝（只拷贝浅层内容,深层仍是地址转移）
    # # copy为完全拷贝当前内容，内存地址和之前不一致，
    # # 赋值为内存地址的指向，之前一样所以可以动态更新
    # from copy import deepcopy
    # list2 = list1.copy()
    # list3 = list1
    # list4 = deepcopy(list1)
    # print(list1,"原列表")
    # print(list3,"赋值")
    # print(list2,"浅拷贝")
    # print(list4,"深拷贝")
    #
    # # 对外层列表和内层列表进行拓展
    # list1.append("lala")
    # list1[5].append("didi")
    #
    # # 可以看出，深拷贝多层都为拷贝而不是地址空间的复制
    # print(list1,"原列表")
    # print(list3,"赋值")
    # print(list2,"浅拷贝")
    # print(list4,"深拷贝")
    #
    # # clear()
    # print(list1.clear())
    #
    # # extend()
    # list1_1 = [1,2,3]
    # list1_2 = [4,5,6]
    # list1_1.extend(list1_2)
    # print(list1_1)
    #
    # # reverse()
    # list1_1.reverse()
    # print(list1_1)
    #
    # # sort()
    # list1_3 = [8,6,3,5,9,1,]
    # print(list1_3)
    # list1_3.sort()
    # print(list1_3)
    # list1_3.sort(reverse=True)
    # print(list1_3)
    #
    # # ===============================================================
    # # ===============================================================
    # # 字典
    # dict1 = {'name':'lee','age':21,'sex':'male','school':'ahpu'}
    #
    # # 按照key存取值
    # print(dict1["school"])
    # # get
    # print(dict1.get("name"))
    # print(dict1.get("nam"))
    # print(dict1.get("name","国立武汉大学"))
    # print(dict1.get("nam","111"))
    #
    # # len
    # print(len(dict1))
    #
    # # in or not
    # print("lee" in dict1)
    # print("name" in dict1)
    #
    # # delete
    # del dict1["school"]
    # print(dict1)
    #
    # # pop
    # name1 = dict1.pop("name")
    # print(dict1)
    # print(name1)
    # # popitem随即取出字典中的某个元素
    # # （字典是无序类型）
    # dict1.popitem()
    # print(dict1)
    #
    # # key value items
    # print(dict1.keys())
    # print(dict1.values())
    # print(dict1.items())
    #
    # # 循环
    # for key in dict1:
    #     print(key)
    #
    # # update
    # dict2 = {"n":"n","B":"b"}
    # dict1.update(dict2)
    # print(dict1)
    #
    # # 元组（小括号内，逗号隔开，存放多个值）
    # # 注意元组与列表的区别
    # # 元组是不可变类型，列表是可变类型
    # t1 = (1, 2, 3, 4, 5, 6, 7, 8, 9)
    # # 索引取值,
    #
    #
    # # 切片
    # print(t1[0:10:2])
    # print(t1[0:10])
    #
    # # 长度
    # print(len(t1))
    #
    # # 成员运算
    # print(2 in t1)
    # print(22 in t1)
    #
    # # 循环
    # for i in t1:
    #     print(i)
    #
    # # 集合（在大括号内，以逗号隔开，
    # #       可存放多个值，自带默认去重复功能）
    # set1_1 = {1,3,4,5,6,4,4,3}
    # print(set)
    #
    # set1 = set()
    # set2 = {}
    # print(set1)
    # print(set2)
    # print(type(set1))
    # print(type(set2))
    #
    # # 文件处理
    # # 读写基本使用
    # # 对文本进行操作
    # # f = open('name.txt',mode='wt',encoding="utf-8")
    # #           绝对路径     模式          字符编码
    # # f为句柄
    # # write
    # a = open(
    #     r'C:\Users\71936\Desktop\name.txt',
    #     mode='wt',
    #     encoding="utf-8")
    # a.write('Hello World')
    # a.close()
    # # read
    # b = open(
    #     r'C:\Users\71936\Desktop\name.txt',
    #     mode='rt',
    #     encoding="utf-8")
    # res = b.read()
    # print(res)
    # b.close()
    # # 文件追加
    # c = open(
    #     r'C:\Users\71936\Desktop\name.txt',
    #     mode='a',#默认at模式
    #     encoding="utf-8")
    # c.write('\nHello Lee')
    # c.close()
    # b = open(
    #     r'C:\Users\71936\Desktop\name.txt',
    #     mode='rt',
    #     encoding="utf-8")
    # res = b.read()
    # print(res)
    # b.close()
    # # 文件处理之上下文管理
    # # 自动调用close方法
    # # 写
    # with open(
    #     r'C:\Users\71936\Desktop\name1.txt',
    #     'w',
    #     encoding = "utf-8")as e:
    #     e.write("slkdjf")
    # # 读
    # with open(
    #     r'C:\Users\71936\Desktop\name1.txt',
    #     'r',
    #     encoding = "utf-8")as f:
    #     demo = f.read()
    #     print(demo)
    # # 追加
    # with open(
    #     r'C:\Users\71936\Desktop\name1.txt',
    #     'a',
    #     encoding = "utf-8")as g:
    #     g.write("\n11111")
    # with open(
    #     r'C:\Users\71936\Desktop\name1.txt',
    #     'r',
    #     encoding = "utf-8")as f:
    #     demo = f.read()
    #     print(demo)
    # 图片与视频读写操作
    #
    # import requests
    # res = requests.get('http://pic37.nipic.com/20140113/8800276_184927469000_2.png')
    # print(res.content)
    # # 写
    # with open(r'C:\Users\71936\PycharmProjects\untitled\1.png','wb')as h:
    #     h.write(res.content)
    # # 读
    # with open(r'C:\Users\71936\PycharmProjects\untitled\1.png','rb')as i:
    #     u = i.read()
    #     print(u)
    # # 拷贝
    # with open(r'C:\Users\71936\PycharmProjects\untitled\2.png','wb')as j:
    #     j.write(u)
    
    # # 读写视频
    # with open(r'C:\Users\71936\PycharmProjects\untitled\1.mp4','rb') as a, open(r'C:\Users\71936\PycharmProjects\untitled\2.mp4','wb') as b:
    #     res = a.read()
    #     print(res)
    #     b.write(res)
    # # 一行一行读文件
    # with open(r'1.mp4','rb') as a, open(r'2.mp4','wb') as b:
    #     a.read()
    #     for line in a:
    #         a.write(line)
    
    # '''
    # =======================================================
    # 函数
    # =======================================================
    # def 用来生命定义函数的关键字
    # 函数名：看其名知其意
    # （）：括号，存放的是接受外界数据的参数
    # 注释：用来说明函数的作用
    # 函数体代码：逻辑代码
    # return 返回值
    # '''
    # # 注册功能
    # def register():
    #     while True:
    #         user = input('请输入用户名：').strip()
    #         pwd = input('请输入密码：').strip()
    #         re_pwd = input('请再次输入密码：').strip()
    #
    #         #   判断密码是否一致
    #         if pwd == re_pwd:
    #             # user_info = '用户名:%s,密码:%s' %(user,pwd)
    #             # user_info = '用户名:{},密码:{}'.format(user,pwd)
    #             user_info = f'用户名:{user},密码:{pwd}'
    #             # 把用户信息写入文件中
    #             with open(f'{user}.txt', 'w', encoding = 'utf-8') as f:
    #                 f.write(user_info)
    #             break
    #         else:
    #             print('两次输入不一致')
    # # 调用
    # register()
    
    # 函数在定义阶段发生的事情
    # 1.先打开python解释器
    # 2.加载.py文件
    # 3.会检测语法，不会执行函数体代码
    
    def fool():
        print("you are a fool")
        bar()
    #
    fool()

转载于:https://www.cnblogs.com/badtimeandheroesaround/p/11014148.html