如何将年、日、月转换为日期时间？

import datetime

def convert_to_datetime(year, month, day):
    try:
        date_str = f"{year}-{month}-{day}"
        date_obj = datetime.datetime.strptime(date_str, "%Y-%m-%d")
        return date_obj
    except ValueError:
        return "Invalid date"

year = 2022
month = 10
day = 15

result = convert_to_datetime(year, month, day)
print(result)