擅长:python、mysql、java
<pre><code>>>> print ("Cost: %f" % 25.77)
Cost: 25.770000
>>> print ("Cost: %.2f" % 25.77)
Cost: 25.77
</code></pre>
<p>不确定在PyDoc中到底在哪里找到它,但至少可以找到相同的宽度精度规则<a href="https://docs.python.org/3.6/library/string.html#format-specification-mini-language" rel="nofollow noreferrer">here</a></p>