来位大神救救孩子，就这一道了!

with open('trans.txt') as f:
    s = f.readline()
num = 0
n = ''
for i in s:
    if i.isnumeric():
        n += i
    else:
        if n:
            with open('trans.out', 'a+') as f:
                f.write(n+' ')
        n = ''
if n:
    with open('train.out', 'a+') as f:
        f.write(n+'\n')