合并文件内容

import os
def func(filepath):
    res = os.listdir(filepath)
    list1 = []
    for k in res:
        ret = os.path.join(filepath,k)
        if os.path.isfile(ret):
            list1.append(ret)
        else:
            func(ret)
    for m in list1:
        with open('%s'% m,'rb')as f:
            f1 =f.read()
            with open('合并的内容','a')as f2:
                f3 = str(f1)
                f2.write(f3)
    return list1
x = func('../../MyFirstPython')
print(x)