股票，收盘价的字典处理

#!/usr/bin/python
# -*- coding: UTF-8 -*-
"""
@author: YangPC
@time:2021/06/24
@QQ:327844761
@微信公众号：ewbang
"""
# (1)
dic = {'AXP': 78.51, 'BA': 184.76, 'CAT': 96.39, 'CSCO': 33.71, 'CVX': 106.09}
print(dic)

# (2)
dic['QDPJ'] = 41.50
print(dic)

# (3)
dic['CAT'] = 102.35
print(dic)