擅长:python、mysql、java
<p>我相信<code>reindex</code>应该适合你:</p>
<pre><code># First convert the index to datetime
dataset.index = pd.DatetimeIndex(dataset.index)
# Then reindex! You can also select the min and max of the index for the limits
dataset= dataset.reindex(pd.date_range("2019-01-01", "2019-02-12"), fill_value="NaN")
</code></pre>