擅长:python、mysql、java
<h2>使用“”(空格)在正数前插入空格,在负数前插入减号:</h2>
<pre><code>txt = "The temperature is between {: } and {: } degrees celsius."
print(txt.format(-3, 7))
</code></pre>
<p>答复:</p>
<pre><code>The temperature is between -3 and 7 degrees celsius.
</code></pre>