Code reviewMediumcr-g107

Subject IdempotencyLevel Mid–Senior~25 minCommon in Networking & APIs interviewsIndustries Software development

Question

Review this Python Stripe-style webhook handler.

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Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.

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Code to reviewpython

1@app.route("/webhook", methods=["POST"])2def webhook():3    event = json.loads(request.data)4    etype = event["type"]5    if etype == "invoice.paid":6        data = event["data"]7        credit_account(data["customer"], data["amount"])8    elif etype == "invoice.payment_failed":9        flag_dunning(event["data"]["customer"])10    return "", 200

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