dict结构

dict结构

name = {'John':'13335531783', 'Bob':'18056523198'} # Dictionary(字典)类似于C++的map，以key:value的形式创建
print(name['John']) # 访问
name['Alice'] = '18056500783' # 增加一对<key, value>
name['John'] = '13333333333' # 修改value
print(name)
del name['John'] # 删除元素
print(name)
name.clear() # 清空字典
print(name)
del name # 删除字典
name = {(123, 456):'when'} # key还可以是元组但不能是列表
print(name[(123, 456)])