擅长:python、mysql、java
<p>使用<a href="https://docs.python.org/3/library/collections.html#collections.Counter" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>from collections import Counter
sentence = input("Please enter a sentence:")
character = input("Please enter a single character:")
letter_cnts = Counter(sentence)
# Using format
print('Your character {cha} occurs {cnt} times in the sentence'.format(cha=character, cnt=letter_cnts[character]))
# Using f-strings
print(f'Your character "{character}" occurs {letter_cnts[character]} times in the sentence')
</code></pre>