sslv3警报握手失败（_ssl.c：590）？

Question

这是我的代码：

def test(request):
    paypalrestsdk.configure({
      "mode": "security-test-sandbox",
        "client_id": "XXXXXXX-XXXX-XXXX-XXXX",
        "client_secret": "XXXXXXX-XXXX-XXXX-XXXX"  })

    payment = paypalrestsdk.Payment({
      "intent": "sale",
      "payer": {
        "payment_method": "credit_card",
        "funding_instruments": [{
          "credit_card": {
            "type": "visa",
            "number": "4417119669820331",
            "expire_month": "11",
            "expire_year": "2018",
            "cvv2": "874",
            "first_name": "Joe",
            "last_name": "Shopper" }}]},
      "transactions": [{
        "item_list": {
          "items": [{
            "name": "item",
            "sku": "item",
            "price": "1.00",
            "currency": "USD",
            "quantity": 1 }]},
        "amount": {
          "total": "1.00",
          "currency": "USD" },
        "description": "This is the payment transaction description." }]})

    if payment.create():
      print("Payment created successfully")
    else:
      print(payment.error)
    return render(request, "test.html")

执行命令payment.create()时，错误为：
[SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl.c:590)
我正在使用Mac。