UnicodeDecodeError：'utf8'编解码器无法在cx_Oracle中解码

Question

//the js code
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
    $scope.val_2 = false;
    $scope.val_1 = false;
    $scope.myfun = function () {
        $scope.val_1 = true;
        $scope.val_2 = true;
        history.pushState("","","new");
    }
    window.addEventListener('popstate',function()
    {
    $scope.val_2 = false;
    $scope.val_1 = false;
    });
});

在python 3.6中

我试图连接到数据库，我收到此错误， UnicodeDecodeError：'utf8'编解码器无法解码