python为元组相关操作

1. 为元组命名，提高可读性

# 定义元组名称
_NAME, _AGE, _SEX, _EMAIL = range(4)

def way1():
    student = ('Jim', 16, 'male', '[email protected]')
    print(student[_NAME])
    print(student[_AGE])
    print(student[_SEX])
    print(student[_EMAIL])

def way2():
    from collections import namedtuple
    Student = namedtuple('Student', ['name', 'age', 'sex', 'email'])
    s = Student('Jim', 16, 'male', '[email protected]')
    print(s)
    print(s.name)

if __name__ == '__main__':
    way2()

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2. 统计元组中出现的频度

def count_nums1():
    '''
    # 创建字典，data中数据作为key, value为0
    # 迭代data，相同值value+1
    :return:
    '''
    data = [randint(0, 10) for _ in range(30)]
    data_dict = dict.fromkeys(data, 0)

    for i in data:
        data_dict[i] += 1
    print(data_dict)


def count_nums2():
    '''
    # 使用Counter包，most_common(n)
    前n个高频词
    :return:
    '''
    from collections import Counter
    data = [randint(0, 10) for _ in range(30)]
    data_dict = Counter(data)
    print(data_dict.most_common(3))