from datetime import datetime, time
midnight = datetime.combine(datetime.today(), time.min)
结合了今天的日期（您可以使用，也可以选择date()一个datetime()实例），并在午夜time.min形成一个datetime对象。 __
from datetime import timedelta
yesterday_midnight = midnight - timedelta(days=1)
现在测试您的时间戳是否介于这两点之间：
timestamp = datetime.fromtimestamp(some_timestamp_from_your_log)
if yesterday_midnight <= timestamp < midnight:
# this happened between 00:00:00 and 23:59:59 yesterday
from datetime import datetime, time, timedelta
def is_yesterday(timestamp):
midnight = datetime.combine(datetime.today(), time.min)
yesterday_midnight = midnight - timedelta(days=1)
return yesterday_midnight <= timestamp < midnight:
if is_yesterday(datetime.fromtimestamp(some_timestamp_from_your_log)):
# ...
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