擅长:python、mysql、java
<p>您可以定义颜色数组并传递到<code>bar</code>命令:</p>
<pre><code>colors = ['r' if m > 0 else 'g' for m in df.momentum]
df.plot.bar(y='momentum',color=colors, ax=ax3)
</code></pre>
<p>输出:</p>
<p><a href="https://i.stack.imgur.com/1u0nd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1u0nd.png" alt="enter image description here"/></a></p>