擅长:python、mysql、java
<p>您需要捕获ValueError并循环它。你知道吗</p>
<pre><code>newGen = None
while newGen is None or (newGen < 5 or newGen > 25):
try:
newGen = int(input("Input number of new generations to model (should be between 5 and 25\n)"))
except ValueError:
pass
</code></pre>