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  • 字符串

    输⼊⼀个字符串,要求判断在这个字符串中⼤写字⺟,⼩写字⺟,数字,
    # 其它字符共出现了多少次,并输出出来
    # n = input("请输入字符串")
    # T = 0
    # t = 0
    # d = 0
    # q = 0
    # for i in n:
    # if n != n.lower():
    # T+=1
    # elif n != n.upper():
    # t+=1
    # elif n.isdigit():
    # d+=1
    # else:
    # q+=1
    # print(T,t,d,q)
    .使⽤for循环对s="321"进⾏循环,打印的内容依次是:"倒计时3秒","倒计时
    # 2秒","倒计时1秒","出发!"。
    # s = "321"
    # count = 4
    # for i in s:
    # count -= 1
    # print(f"还剩余{i}秒")
    # print("出发")
    # s = "321"
    # for i in s:
    # print(f"还剩{i}秒")
    # print("go!")
    字符串是固定的,不能在它本身更改,要给它赋值
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  • 原文地址:https://www.cnblogs.com/heheda123456/p/10034606.html
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