擅长:python、mysql、java
<pre><code>>>> sentence = input("Sentence: ")
Sentence: this is a sentence
>>> counts = {i:0 for i in 'aeiouAEIOU'}
>>> for char in sentence:
... if char in counts:
... counts[char] += 1
...
>>> for k,v in counts.items():
... print(k, v)
...
a 1
e 3
u 0
U 0
O 0
i 2
E 0
o 0
A 0
I 0
</code></pre>