__init__.py 文件源码

def _binop(self, other, *, _opnode=opnode, _sym=sym):
            othername, other, constants = _normalize_arg(
                other,
                self._constants,
            )

            return __class__(
                '%s %s %s' % (self._pname, _sym, othername),
                ast.Compare(
                    left=self._tree,
                    ops=[_opnode()],
                    comparators=[other],
                ),
                merge(constants, getattr(other, '_constants', {})),
            )