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

dict = {'Tom':87,'Jack',59,'Tim':77}
dict['Tom']

# 添加与修改字典中的数

dict['Peter'] = 90
dict['Alex'] = 100
dict['Alex'] = 99

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

dict = {'Tom':87,'Jack',59,'Tim':77}
dict['Tom']

# 添加与修改字典中的数

dict['Peter'] = 90
dict['Alex'] = 100
dict['Alex'] = 99

# -*- coding: utf-8 -*-/ # 添加与修改字典中的数