#!usr/bin/env python
# -*- coding:utf-8 -*-
# dic={
# 'apple':10,
# 'iphon':5000,
# 'wwatch Tv':3000
# }
# for i in dic:
# print(i,dic[i]) msg=('a','b','c','d')
for i in range(len(msg)):
print(i) # for循环不依赖索引取值
msg_dic = {
'apple': 20,
'phone': 2000,
'banana': 10,
}
# 例如：
for item in msg_dic:
print(item, msg_dic[item]) for i in range(1, 10): # 顾头不顾尾，默认从0开始
print(i) for i in range(1, 10,2):# 步长为2
print(i) for i in range(10, 1,-1): # 倒着走
print(i)
一、九九乘法表打印：
打印99乘法表
# for i in range(1,10):
# for j in range(1,i+1):
# print('%s*%s=%s'%(i,j,i*j),end=' ')
# print()
二、统计s = 'hello alex al
二、统计s = 'hello alex alex say hello sb sb'中每个单词的个数
2统计s = 'hello alex alex say hello sb sb'中每个单词的个数
# s = 'hello alex alex say hello sb sb'
# l=s.split()
# print(l)
# dic = {}
# for item in l:
# if item in dic:
# dic[item]=dic[item]+1
# else:
# dic[item]=1
# print(dic)