Python基础---习题

1、从1到100的和

#!/usr/bin/python#-*- coding:UTF-8 -*-sum = 0for i in range(1, 101):    sum = sum + iPRint sum
2、输出1到100中所有的质数
def judge(x):    for i in range(2, x):        if x%i == 0:            return False    return Truefor i in range(2, 101):    if judge(i):        print i     3、计算单词出现次数
f = open("test.txt")lines = f.readlines()count = {}for line in lines:    tokens = line.strip().split(' ')    for token  in tokens:        if token not in count:            count[token] = 0        count[token] += 1for Word in count:    print word, count[word]