<p>我正在写一些代码来测试一年是否是闰年</p>
<p>所以我写了:</p>
<pre><code>year = input("please enter a year: ")
if (year % 4) == 0:
print(f"{year} is a leap year.")
else:
print(f"{year} is a nonleap year.")
</code></pre>
<p>报告的错误是:</p>
<pre><code> if (year % 4) == 0:
TypeError: not all arguments converted during string formatting
</code></pre>