擅长:python、mysql、java
<p><code>isValidGuest</code>返回布尔表达式-不应将其与输入的数字进行比较,只需检查它是<code>True</code>还是<code>False</code>:</p>
<pre><code>while not isValidGuest ( guests ):
print ("Invalid! Enter only positive whole numbers.")
guests = input ("Please enter the number of guests: ")
</code></pre>