#!/usr/bin/env python
#-*- coding:utf-8 -*- #打印0001-9999的数字
for i in range(9999):
s = "%04d" % i
print(s) #循环打印字典
dict1 = {"tom":90,"dgg":100,"sb":-1}
for a in dict1:
print(a,dict1[a]) #打印dict1的值
for value in dict1.values():
print(value) #dict1.items 返回的是一个完整的列表
print(dict1.items()) #k与v分别对应的是key和value
for k,v in dict1.items():
print(k,v) #enumerate 显示字典key的下标
for i,v2 in enumerate(dict1):
print(i,v2)