当月份为字母时，将字符串转换为日期

# 字母月份转换字典
month_mapping = {
    "Jan": "01",
    "Feb": "02",
    "Mar": "03",
    "Apr": "04",
    "May": "05",
    "Jun": "06",
    "Jul": "07",
    "Aug": "08",
    "Sep": "09",
    "Oct": "10",
    "Nov": "11",
    "Dec": "12"
}

def convert_string_to_date(date_string):
    # 拆分字符串
    month, day, year = date_string.split("-")
    
    # 转换月份字母为数字
    month = month_mapping[month]
    
    # 拼接新的日期字符串
    new_date_string = f"{month}-{day}-{year}"
    
    # 转换为日期对象
    date = datetime.datetime.strptime(new_date_string, "%m-%d-%Y").date()
    
    return date

# 示例用法
date_string = "Jan-01-2022"
date = convert_string_to_date(date_string)
print(date)