擅长:python、mysql、java
<p>您可以在<code>input()</code>之后执行<code>if</code>语句,仍然保留<code>except ValueError</code>,例如:</p>
<pre><code>while True:
try:
age=int(input('Please enter your age in years'))
if age < 200:
# age is valid, so we can break the loop
break
else:
# age is not valid, print error, and continue the loop
print('\n\n\n\nThat\'s not a valid Number.\nPlease try Again.\n\n\n\n')
except ValueError:
print('\n\n\n\nThat\'s not a valid Number.\nPlease try Again.\n\n\n\n')
</code></pre>