# 如l=[11,11,12,12,432,32,43,33,33,43,12,22,432,21,33,43]中每个元素出现的次数
l = [11,11,12,12,432,32,43,33,33,43,12,22,432,21,33,43]
from collections import Counter
r = Counter(l)
print r
'''
Counter({11: 2, 12: 3, 432: 2, 32: 1, 43: 3, 33: 3, 22: 1, 21: 1})
更多Counter用法请用: help(Counter)
'''
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