擅长:python、mysql、java
<p>试试这个:</p>
<pre><code>import matplotlib.cm as cm
import numpy as np
colors = cm.rainbow(np.linspace(0, 1, arr.shape[0]))
plt.scatter(arr, arr, c=colors)
</code></pre>
<p><img src="https://i.stack.imgur.com/APwur.png" alt="enter image description here"/></p>
<p>就你而言:</p>
<pre><code>import matplotlib.cm as cm
seq_of_colors = cm.rainbow(np.linspace(0, 1, df_history.shape[0]))
</code></pre>