python获取hive表时间格式最大分区

#获取表的最大分区
import boto3
from datetime import datetime,timedelta
def get_max_partition(db_name,table_name,partition_format='%Y-%m-%d'):
    client=boto3.client('glue')
    yesterday=datetime.utcnow()
    max_partition=yesterday.strftime(partition_format)
    response = client.batch_get_partition(
        DatabaseName=db_name,
        TableName=table_name,
        PartitionsToGet=[
            {
                'Values': [
                    max_partition,
                ]
            },
        ]
    )
    while response['Partitions']==[]:
        if partition_format in ['%Y-%m-%d','%Y%m%d']:
            yesterday=yesterday-timedelta(days=1)
        elif partition_format in ['%Y-%m','%Y%m']:
            if yesterday.month >1:
                yesterday = yesterday.replace(month=yesterday.month - 1)
            else:
                yesterday = yesterday.replace(year=yesterday.year - 1, month=12)
        max_partition=yesterday.strftime(partition_format)
        response = client.batch_get_partition(
            DatabaseName=db_name,
            TableName=table_name,
            PartitionsToGet=[
                {
                    'Values': [
                        max_partition,
                    ]
                },
            ]
        )
    return response['Partitions'][0]['Values'][0]