如何在python的字典中将字符串转换为整型或浮点型？

my_dict = {'key1': '123', 'key2': '3.14'}
my_dict['key1'] = int(my_dict['key1'])
print(my_dict['key1'])  # 输出：123

my_dict = {'key1': '123', 'key2': '3.14'}
my_dict['key2'] = float(my_dict['key2'])
print(my_dict['key2'])  # 输出：3.14