constructor.py 文件源码

def construct_python_bytes(self, node):
            # type: (Any) -> Any
            try:
                value = self.construct_scalar(node).encode('ascii')
            except UnicodeEncodeError as exc:
                raise ConstructorError(
                    None, None,
                    "failed to convert base64 data into ascii: %s" % exc,
                    node.start_mark)
            try:
                if hasattr(base64, 'decodebytes'):
                    return base64.decodebytes(value)
                else:
                    return base64.decodestring(value)
            except binascii.Error as exc:
                raise ConstructorError(
                    None, None,
                    "failed to decode base64 data: %s" % exc, node.start_mark)