expression.py 文件源码

def handle_UnaryOp(state, node, ctx):
        state, result = peval_call(
            state, ctx, UNARY_OPS[type(node.op)], args=[node.operand])
        if not is_known_value(result):
            state = state.update(temp_bindings=state.temp_bindings.del_(result.func.id))
            result = ast.UnaryOp(op=node.op, operand=result.args[0])
        return state, result