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  • py-day1-4 python基本数据类型2

    # replace 替换
    text = 'xiaomafafafahaoyunlianlian'
    v = text.replace('fa','shun')
    x = text.replace('fa','shun',1)
    print(v)
    print(x)
    
    xiaomashunshunshunhaoyunlianlian
    xiaomashunfafahaoyunlianlian

    断句expandtabs( number)


    name = "nihao" # isalpha()字符串中是否只包含字母 v = name.isalpha() print(v)
    number = '123456'    # isalnum() 字符串中是否只包含数字
    v = number.isalnum()
    print(v)

    # isspace() 判断是否都是空格
    name = ' '
    v = name.isspace()
    print(v)
    # istitle()  判断是否是标题(首字母大写)
    test = 'Ni Hao zhong guo'
    v = test.istitle()
    print(v)
    
    test = 'Ni Hao Zhong Guo'
    v = test.istitle()
    print(v)
    # join 将字符串中的每一个元素按照指定分隔符进行拼接
    test = '你是风儿我是沙'
    m = "*"
    v = m.join(test)
    print(v)
    
    你*是*风*儿*我*是*沙
    # center()   中间填充
    test = '好好学习'
    v = test.center(20,'*')
    print(v)
    
    ********好好学习********
    # ljust() 向右填充
    test = '好好学习'
    v = test.ljust(20,"*")
    print(v)
    
    好好学习****************
    # rjust() 向左填充
    test = '好好学习'
    v = test.rjust(20,"*")
    print(v)
    
    ****************好好学习
    # zfill()  固定向左以0填充
    test = '好好学习'
    v = test.zfill(20)
    print(v)
    
    0000000000000000好好学习
    # islower() 判断是否全部是大写
    # lower()  转换为大小写
    test = 'Majun'
    v1 = test.islower()
    v2 = test.lower()
    print(v1,v2)
    
    False majun
    # lstrip()  去除左边的空格 
    name = ' majun '
    v = name.lstrip()
    print(v)
    
    majun
    # rstrip() 去除右边的空格
    name = ' majun '
    v = name.rstrip()
    print(v)
    
      majun
    # strip() 去除两边的空格 
    name = ' majun '
    v = name.strip()
    print(v)
    
    majun
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  • 原文地址:https://www.cnblogs.com/majunBK/p/10387976.html
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