如何在Python中使用不同的列表元素更新字典

my_dict = {'key1': 'value1', 'key2': 'value2'}
my_list = ['key1', 'key3']
for key in my_list:
    if key in my_dict:
        my_dict[key] = 'new value'
    else:
        my_dict[key] = 'default value'

my_dict = {'key1': 'value1', 'key2': 'value2'}
my_list = ['key1', 'key3']
my_dict = {key: 'new value' if key in my_dict else 'default value' for key in my_list}

my_dict = {'key1': 'value1', 'key2': 'value2'}
my_list = ['new value', 'default value']
my_dict.update(dict(zip(my_dict.keys(), my_list)))