擅长:python、mysql、java
<p>看起来,你的性病加倍了两次。我想应该是这样的:</p>
<pre><code>time_series_df = pd.DataFrame(time_series_array)
smooth_path = time_series_df.rolling(20).mean()
path_deviation = time_series_df.rolling(20).std()
plt.plot(smooth_path, linewidth=2)
plt.fill_between(path_deviation.index, (smooth_path-2*path_deviation)[0], (smooth_path+2*path_deviation)[0], color='b', alpha=.1)
</code></pre>