擅长:python、mysql、java
<pre><code> def swap_letters(string,pos,string1):
s = list(string)
s[len(s)-1], s[len(s)-2] = s[len(s)-2], s[len(s)-1].lower()
string = ''.join(s)
string1[pos[0]]=string
s1= ' '.join(string1)
return s1
def foo(a_string):
a_string_lis = a_string.split()
print(a_string_lis)
token = random.choice(a_string_lis)
pos=[i for i in range(len(a_string_lis)) if a_string_lis[i]==token]
return swap_letters(token,pos,a_string_lis)
s='The quick brown fox jumps over the lazy dog'
print(foo(s))
</code></pre>