擅长:python、mysql、java
<p>如果您想使用当前时间来确定您的输出</p>
<pre><code>import datetime, time
from datetime import timedelta
daytime = '2019-05-03 09:00:00'
target = datetime.datetime.strptime(daytime, '%Y-%m-%d %H:%M:%S')
print (datetime.datetime.now())
now = datetime.datetime.now()
new_time = target-now
if new_time > datetime.timedelta(0):
print('Will sleep {} : {}'.format(daytime, new_time))
time.sleep(new_time.total_seconds())
</code></pre>