copy.py 文件源码

def _copyFile(self, context, src, dest):
        src = normLongPath(src)
        dest = normLongPath(dest)
        with open(src, 'rb') as inp:
            with openForWrite(dest, 'wb') as out:
                shutil.copyfileobj(inp, out)
        shutil.copymode(src, dest)
        assert os.path.exists(dest)