创建并查询测试 PaymentIntent

import json, os, uuid, urllib.parse, urllib.request, urllib.error
key = os.environ["STRIPE_TEST_SECRET_KEY"]
if not key.startswith("sk_test_"):
    raise SystemExit("本示例只接受 sk_test_ 测试密钥")
# 首次调用生成一个键；网络重试同一操作时沿用该键和完全相同的参数。
idempotency_key = os.environ.get("STRIPE_IDEMPOTENCY_KEY") or "demo-" + str(uuid.uuid4())
print("本次幂等键（重试时设置 STRIPE_IDEMPOTENCY_KEY）:", idempotency_key)
body = urllib.parse.urlencode({"amount": 2000, "currency": "usd", "payment_method_types[]": "card"}).encode()
req = urllib.request.Request("https://api.stripe.com/v1/payment_intents", data=body, method="POST", headers={
    "Authorization": "Bearer " + key,
    "Content-Type": "application/x-www-form-urlencoded",
    "Idempotency-Key": idempotency_key,
})
try:
    with urllib.request.urlopen(req, timeout=30) as response:
        data = json.load(response)
except urllib.error.HTTPError as exc:
    raise SystemExit(f"HTTP {exc.code}: {exc.read().decode()}")
# 不打印 client_secret。
print(json.dumps({name: data.get(name) for name in ("id", "amount", "currency", "status", "livemode")}, indent=2))
if data.get("livemode") is not False:
    raise SystemExit("环境核对失败，请停止继续处理")

import json, os, re, urllib.request, urllib.error
key = os.environ["STRIPE_TEST_SECRET_KEY"]
if not key.startswith("sk_test_"):
    raise SystemExit("本示例只接受 sk_test_ 测试密钥")
intent_id = os.environ["STRIPE_PAYMENT_INTENT_ID"]
if not re.fullmatch(r"pi_[A-Za-z0-9]+", intent_id):
    raise SystemExit("请输入上一请求返回的 pi_ ID")
req = urllib.request.Request("https://api.stripe.com/v1/payment_intents/" + intent_id,
    headers={"Authorization": "Bearer " + key})
try:
    with urllib.request.urlopen(req, timeout=30) as response:
        data = json.load(response)
except urllib.error.HTTPError as exc:
    raise SystemExit(f"HTTP {exc.code}: {exc.read().decode()}")
print(json.dumps({name: data.get(name) for name in ("id", "amount", "amount_received", "currency", "status", "livemode")}, indent=2))
if data.get("livemode") is not False:
    raise SystemExit("环境核对失败")