擅长:python、mysql、java
<p>计数器和运算符的组合可能会起到以下作用:</p>
<pre><code>from collections import Counter
import operator
text = raw_input("enter string:")
freq = Counter(i for i in text if i in 'aeiou')
items = sorted(freq.items(),key=operator.itemgetter(1))
min = items[0][1]
for character,frequency in items:
if frequency == min:
print character,frequency
</code></pre>