擅长:python、mysql、java
<p>这就是<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.iteritems.html" rel="nofollow noreferrer">iteritems</a>的用途:</p>
<pre><code>for idx, val in loadexpense_df['Date'].items():
pass
</code></pre>
<p>但是,您的代码在链索引方面可能有一些问题。例如:</p>
<pre><code>loadexpense_df["Month"][count] = "Jul"
</code></pre>
<p>我认为您应该查看<code>np.select</code>或<code>.loc</code>访问。这有助于提高代码的可读性和性能。例如:</p>
<pre><code>checkMonth = loadexpense_df['Date'].dt.month
loadexpense_df.loc[checkMonth==1, 'month'] = 'Jul'
...
</code></pre>