擅长:python、mysql、java
<p>开始和结束之间的差异给出了一个<a href="https://docs.python.org/3/library/datetime.html#timedelta-objects" rel="nofollow noreferrer">timedelta</a>对象。您需要像这样使用timedelta的类字段之一来访问时差。你知道吗</p>
<pre><code>from datetime import datetime
start = datetime.now()
end = datetime.now()
delta = end - start
distance = 20
speed = distance / delta.seconds
# 4.0 distance units / second
</code></pre>