擅长:python、mysql、java
<p>我想你想自己制作一个像内置映射函数一样的函数。请尝试以下操作:</p>
<pre><code>def remove_trailing_newlines(s):
s_clean = s.rstrip()
return s_clean
def mapl(f,l):
ret = []
for i in l:
ret.append(f(i))
return ret
l = ['Apple\n','banana\n','mango\n']
new_list = mapl(remove_trailing_newlines,l)
print(new_list)
>> ['Apple', 'banana', 'mango']
</code></pre>
<p>如果不符合您的要求,请告诉我</p>