orig_input = input
def input(msg):
    ipt = orig_input(msg)
    print(ipt)
    return ipt
 
#★ここから上は不要なので消してください★#
 
print('ローマ字で名と姓を入力してください。')
print('名と姓の間に半角スペースを入れてください。')
print('また、文字数は25文字以下です。')
while True:
    name = input('>')
    if name == '' or len(name) > 25:
        print('文字数が正しくありません。')
        print('再入力してください。')
        continue
    name = name.split(' ')
    if len(name) != 2:
        print('名と姓の間に半角スペースを入れてください。')
        print('再入力してください。')
        continue
    break
 
print(f'姓は{name[1]} 名は{name[0]}')
 

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CmFhYQoxMjM0NTY3ODkwIDEyMzQ1Njc4OTAxMjM0NQp0YXJvIHlhbWFkYQo=

aaa
1234567890 123456789012345
taro yamada