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# Demo Describe:字符串格式化以及bool类型的特性# # =================示例1，循环输出一句被格式化的字符串，输入空时自动停止循环==========# """# 1,bool类型：变量为null或者0时，默认false，其他时候默认true# 2,字符串格式化# """# try:#     while 1:#         Name = input("请输入名字：")#         Age = int(input("请输入年数："))#         if Name or Age :#             content = f"{Name}我爱你.请你嫁给我好吗？爱你{Age}年！"#             print(content)#         else:#             break## except ZeroDivisionError as e:#     print(e)# # =================示例2，索引和切片==========# """# 语法；[start:end:step]# 【开始，结束（不被计入切片范围），步长】# 开始或结束省略时，默认0或者最后# 步长：n个字符一组，输出首个字符，并且控制切片方向# """# try:#     content = "两仪式我爱你.请你嫁给我好吗？爱你一万年！"#     print(content[0:5]) #两仪式我爱你#     print(content[:5]) #两仪式我爱你#     print(content[:]) #两仪式我爱你.请你嫁给我好吗？爱你一万年！#     print(content[-7:-1]) #？爱你一万年#     print(content[::2]) #江我你请嫁我吗爱一年#     print(content[::-2])  # ！万你？好给你.爱珊## except ZeroDivisionError as e:#     print(e)# # =================示例3，常用处理==========# """# 转换大小写# """# try:#     content = "qWeR"#     print(content.lower()) #qwer#     print(content.upper()) #QWER# except ZeroDivisionError as e:#     print(e)# # =================示例4，切割和替换==========# """# strip，replace，split# """# try:#     content = " 你好，赛 亚  人。 "#     str=content.strip().replace(" ","") #你好，赛亚人。#     print(str)#     print(str.replace("赛亚人","周星驰")) # 你好，周星驰。#     print(str.split("好，赛")) #["你", "亚人。"] 切割结果会存放到列表中 类似c# remove## except ZeroDivisionError as e:#     print(e)# =================示例6，查找和判断和字符拼接=========="""查找 in find index"""try:    # --------------查找 start---------------------------    # content = "两仪式我爱你.请你嫁给我好吗？爱你一万年！"    # print("两仪式" in content) #True    # print("两仪式" not in content)  #False    # print("两仪式" in content) #False    # #in 可做存在判断，或循环    # content="两仪式我爱你"    # for str in content:    #     print(str)    # ------find,index 查找下标位置------------    # # find 返回所在位置的起点下标，-1代表未找到    # print(content.find("两仪式")) # 0    # print(content.find("两仪式")) # -1    # # find 返回所在位置的起点下标，未找到时进行异常报告    # print(content.index("两仪式"))  # 0    # print(content.index("两仪式"))  # ValueError: substring not found    # --------------查找 end---------------------------    # # --------------判断 start---------------------------    # content = "两仪式我爱你.请你嫁给我好吗？爱你一万年！"    # print(content.startswith("两仪式")) #是否以某字符开头    # print(content.isdigit())  #是否是整数    # print(len(content)) #输出字符长度    # #...等等    #    # # --------------查找 end---------------------------    # --------------判断 字符拼接---------------------------    content = "两仪式,我爱你.请,你嫁给,我好吗？爱,你一,万年！"    print(content.split(","))  # ["两仪式", "我爱你.请", "你嫁给", "我好吗？爱", "你一", "万年！"]    str = content.split(",")    print("_".join(str))  # 两仪式_我爱你.请_你嫁给_我好吗？爱_你一_万年！    # --------------查找 end---------------------------except ZeroDivisionError as e:    print(e)

# Demo Describe:元组"""tuple-内部元素不可变数组 用 () 表示，除此外与列表使用方式相同"""try:    # ------1,tuple只存放一个元素时需要加，号，区别于数学运算上的括号----------    content = ("元组",)    print(content, type(content))  # ("元组",)     # ------2,tuple中的可变列表可以进行改变，本质上是内存地址固定----------    content = ("元组", "元组1", ["1", "2"])    print(content, type(content))  # ("元组", "元组1", ["1", "2"])     content[2].append("3333")    print(content, type(content))  # ("元组", "元组1", ["1", "2", "3333"]) except ZeroDivisionError as e:    print(e)

# Demo Describe:while循环# ========示例1：1至10的总和i = 1totle = 0while i <= 10:    totle = totle + i    print("i值:" + str(i))    print("合计:" + str(totle))    i = i + 1

# Demo Describe:转义字符print("Hi!\tNice!")  # tableprint("Hi!!1\tNice!")print("Hi!!123\tNice!")print("Hi!\nNice!")  # new lineprint("Hi!\rNice!")  # returnprint("Hi!\bNice!")  # backspaceprint("SomeOne have \"good News!\"")print("SomeOne have \"\\\\good News!\"")print(r"Hi!\tNice!")  # raw string --> don"t translate anything#执行Hi! Nice!Hi!!1 Nice!Hi!!123 Nice!Hi!Nice!Nice!HiNice!SomeOne have "good News!"SomeOne have "\\good News!"Hi!\tNice!