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      "source": "## Exercises 7 – answers\n\nThis script queries the ping endpoint 25 times, printing the count, the HTTP Status Code, and the X-RateLimit-Remaining header each time.\n\n1\\. Increase the number of loops, do you start to get 429 errors?\n\n2\\. Can you add in a step to make it wait a few seconds every iteration? Or every 100 iterations?"
    },
    {
      "metadata": {
        "trusted": true
      },
      "cell_type": "code",
      "source": "import requests, sys, time\n\nserver = \"http://rest.ensembl.org/\"\ncon = \"application/json\"\next_ping = \"/info/ping?\"\n\nx = 0\ny = 0\n\nwhile x < 1000:\n\n    # submit the query\n    ping = requests.get(server+ext_ping, headers={ \"Accept\" : con})\n    x += 1\n    y += 1\n    print (\"count:\", x, \"status:\", ping.status_code, \"remaining:\", ping.headers['X-RateLimit-Remaining'])\n    \n    if y == 100:\n        time.sleep(1)\n        y = 0",
      "execution_count": null,
      "outputs": []
    }
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