python检查list是否有重复的数据

 

 
from collections import Counter
 
 
def func1(num_list):
    '''
    直接使用set方法
    '''
    if len(num_list)!=len(set(num_list)):
        print 'have duplicates!!!'
    else:
        print 'no duplicates!!'
 
 
def func2(num_list):
    '''
    使用collection的Counter类
    '''
    cou=Counter(num_list)
    first=cou.most_common(1)
    if first[0][1]>1:
        print 'have duplicates!!!'
    else:
        print 'no duplicates!!'
 
 
if __name__ == '__main__':
    num_list=[[1,2,3,4],[6,7,8],[4,5,6,6,6]]
    for one_list in num_list:
        print 'one_list', one_list
        func1(one_list)
        func2(one_list)

    one_list [1, 2, 3, 4]
    no duplicates!!
    no duplicates!!
    one_list [6, 7, 8]
    no duplicates!!
    no duplicates!!
    one_list [4, 5, 6, 6, 6]
    have duplicates!!!
    have duplicates!!!
    [Finished in 0.3s]

  

 

 

转载：https://blog.csdn.net/together_cz/article/details/77493952