我正在 Python 模块中编写一个方法，它试图让用户的生活更轻松。此方法实现在该日历中创建事件。
def update_event(start_datetime=None, end_datetime=None, description=None):
'''
Args:
start_date: string datetime in the format YYYY-MM-DD or in RFC 3339
end_date: string datetime in the format YYYY-MM-DD or in RFC 3339
description: string with description (\n are transforrmed into new lines)
'''
如果用户指定 start_date 或 end_date，则应进行检查以确定日期是 YYYY-MM-DD 格式还是日期时间 RFC 3339 格式。
if (start_date is not None):
# Check whether we have an date or datetime value
# Whole day events are represented as YYYY-MM-DD
# Other events are represented as …