如何在python字典中更改日期格式(键)

import datetime

def change_date_format(dictionary, old_format, new_format):
    new_dict = {}
    for key, value in dictionary.items():
        if isinstance(key, str) and key.startswith(old_format):
            date_str = key[len(old_format):]
            try:
                date_obj = datetime.datetime.strptime(date_str, old_format)
                new_key = date_obj.strftime(new_format)
                new_dict[new_key] = value
            except ValueError:
                # 处理日期转换错误的情况
                pass
        else:
            new_dict[key] = value
    return new_dict

# 示例用法
original_dict = {
    'date_20220101': 'value1',
    'date_20220102': 'value2',
    'other_key': 'value3'
}

new_dict = change_date_format(original_dict, 'date_', '%Y-%m-%d')
print(new_dict)