I am trying to write a simple little program that calculates the mean, median, mode and standard deviation of a given set of numbers, but I am having trouble writting the script for the mode part, any help? I am using python 3.3.2
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试试计数器模块：
import collections
c = collections.Counter('extremely')
c
Out[4]: Counter({'e': 3, 'm': 1, 'l': 1, 'r': 1, 't': 1, 'y': 1, 'x': 1} )
c.items()
Out[7]: [('e', 3), ('m', 1), ('l', 1), ('r', 1), ('t', 1), ('y' , 1), ('x', 1)]
srted = sorted(c.items(), key= lambda (k,v): -v)
srted
Out[9]: [('e', 3), ('m', 1), ('l', 1), ('r', 1), ('t', 1), ('y' , 1), ('x', 1)]
top = srted[0]
top
输出[11]: ('e', 3)
k,v = top
k
出[13]：'e'
v
出[14]：3
于 2014-03-20T22:07:04.410 回答