擅长:python、mysql、java
<p>试试这个代码:。在</p>
<pre><code>def maximumeven(st):
Result = []
for i in (st):
if i.isdigit():
if (int(i) % 2 == 0):
Result.append(int(i))
if not len(Result):
Result = -3
return Result
func = maximumeven("124dsd89")
print(max(func) if type(func) is list else func)
</code></pre>
<p>输出:8</p>