如何解决需要更新字典的问题

my_dict = {'key1': 'value1', 'key2': 'value2'}
my_dict['key3'] = 'value3'  # 添加键值对
my_dict['key2'] = 'new_value2'  # 修改键值对
del my_dict['key1']  # 删除键值对

from collections import OrderedDict

my_dict = OrderedDict([('key1', 'value1'), ('key2', 'value2')])
my_dict['key3'] = 'value3'  # 添加键值对
my_dict['key2'] = 'new_value2'  # 修改键值对
del my_dict['key1']  # 删除键值对

from collections import defaultdict

my_dict = defaultdict(int)  # 创建一个默认值为0的整数字典
my_dict['key1'] += 1  # 自动创建键值对，并将值加1
my_dict['key2'] += 1  # 自动创建键值对，并将值加1

keys = ['key1', 'key2', 'key3']
values = [1, 2, 3]

my_dict = {key: value for key, value in zip(keys, values)}  # 创建一个新字典