python-directory

#!/usr/bin/python

# --*-- coding: utf-8 --*--

directory={
"张三":16,
"李四":46,
"王二":56,
"赵武":32,
"小白":12
}

#定义一个空的字典

dire={}

print(type(dire))

#输出整个字典

print(directory)

#修改字典value，若key不存在会报错
directory["张三"]="17"

#获取字典中key为haha的value，若不存在，返回NONE
print(directory.get('haha'))

#打印字典中所有的key
for i in directory:
print(i,"---->",character[i])

#删除字典中key为‘’小白‘’的那一段key-value

directory.pop('小白')

#打印字段长度
print(len(directory))

print(type(directory))
print(directory)