list.count(obj)  统计某个元素在列表中出现的次数
例子:

aList = [123, 'xyz', 'zara', 'abc', 123];

print "Count for 123 : ", aList.count(123);
print "Count for zara : ", aList.count('zara');

以上实例输出结果如下:

Count for 123 :  2
Count for zara :  1

排重 https://www.cnblogs.com/kaibindirver/p/12669412.html

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