擅长:python、mysql、java
<p>回答:</p>
<pre><code>first_word = "Amy buys carrots and apples"
def changeLetters(word):
word_list = [] #creates a list to be filled by letters
for letter in word: # fills the list with letters from string
if letter == "a" or letter == "b" or letter == "c": #searches for a b or c
letter = "!" #replaces a b or c with !
word_list.append(letter) # appends the current letter to the list
new_word = "".join(word_list) #joins the letters in the list into a string
return new_word # returns the value of the new word
print(changeLetters(first_word))
</code></pre>
<p>您可以修改或插入“if”语句以替换大写“A”,或根据需要为字母指定不同的替换字符。你知道吗</p>