.python统计文本中每个单词出现的次数:
#coding=utf-8
__author__ = ‘zcg‘
import collections
import os
with open(‘abc.txt‘) as file1:#打开文本文件
str1=file1.read().split(‘ ‘)#将文章按照空格划分开
print "原文本:\n %s"% str1
print "\n各单词出现的次数:\n %s" % collections.Counter(str1)
print collections.Counter(str1)[‘a‘]#以字典的形式存储,每个字符对应的键值就是在文本中出现的次数
2.python编写生成序列化:
__author__ = ‘zcg‘
#endcoding utf-8
import string,random
field=string.letters+string.digits
def getRandom():
return "".join(random.sample(field,4))
def concatenate(group):
return "-".join([getRandom() for i in range(group)])
def generate(n):
return [concatenate(4) for i in range(n)]
if __name__ ==‘__main__‘:
print generate(10)
3.遍历excel表格中的所有数据:
__author__ = ‘Administrator‘</