①定义字典，保存电话号码簿

phonebook = {'olivia':13600000001, 'Kate':'13600000002', 'George':'13600000003', 'Harley':'13600000004'}

②访问字典元素

print(phonebook['olivia']) # 输出13600000001 print(phonebook['Harley']) # 输出13600000004 print(phonebook.get('Abel', '未找到该联系人的电话号码')) # 输出未找到该联系人的电话号码

③修改字典元素

phonebook['olivia'] = 15100000001 print(phonebook['olivia']) # 输出15100000001

④添加字段元素

phonebook['Abel'] = 13600000005 print(phonebook) # 输出{'olivia': 15100000001, 'Kate': '13600000002', 'George': '13600000003', 'Harley': '13600000004', 'Abel': 13600000005}

⑤批量更新字典元素

phonebook.update({'olivia':15100000001, 'Kate':'15100000002', 'Catherine':'13600000006'}) print(phonebook) # 输出{'olivia': 15100000001, 'Kate': '15100000002', 'George': '13600000003', 'Harley': '13600000004', 'Abel': 13600000005, 'Catherine': '13600000006'}

⑥删除字典元素，键为'Abel'

del phonebook['Abel'] print(phonebook) # 输出{'olivia': 15100000001, 'Kate': '15100000002', 'George': '13600000003', 'Harley': '13600000004', 'Catherine': '13600000006'}

⑦清空字典

phonebook.clear() print(phonebook) # 输出{}

⑧删除字典

del phonebook print(phonebook) # 报错，phonebook未定