擅长:python、mysql、java
<pre><code>selected_date = date(some_year, some_month, some_day)
if selected_date.month == 12: # December
last_day_selected_month = date(selected_date.year, selected_date.month, 31)
else:
last_day_selected_month = date(selected_date.year, selected_date.month + 1, 1) - timedelta(days=1)
</code></pre>
<p>其中“timedelta(days=1)”可能与下个月和上个月的最后一个时刻不同。在</p>