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  • python之count()函数

    # count()统计字符串中特定单词或短语出现次数(n = 3)
    strs = 'Good! Today is good day! Good job!'
    n = strs.lower().count("good")
    print(strs, "
    good的个数:", n)
    print("输出字符串前五个字符:", strs[0:5])
    
    # 统计列表每个元素中指定单词出现的个数(n = 2)
    n = 0
    list = ['good day', 'bad', 'well', 'Good job']
    for i in list:
        n += i.lower().count('good')
    print(list, "
    good的个数:", n)
    
    # 统计列表中指定元素出现的个数(n = 1)
    n = 0
    n = list.count('good day')
    print(list, "
    good的个数:", n)
    

      运行结果:

    Good! Today is good day! Good job! 
    good的个数: 3
    输出字符串前五个字符: Good!
    ['good day', 'bad', 'well', 'Good job'] 
    good的个数: 2
    ['good day', 'bad', 'well', 'Good job'] 
    good的个数: 1
    

      

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  • 原文地址:https://www.cnblogs.com/gongxr/p/7225486.html
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