Comparation parsing broken JSON text with json decoder and re modules.

re_vs_json_decoder.py

from re import sub
from timeit import timeit
from json import loads

from requests import get

def test(res):
    return type(res) == list and \
        type(res[0]) == dict and \
        type(res[0]["last_updated"]) == int

url = "https://api.coinmarketcap.com/v1/ticker/"   # Bad formatted JSON

# Parsing raw text response
raw_text = loads(sub(r'"(-*\d+(?:\.\d+)?)"', r"\1", get(url).text))

# Parsing JSON responses
raw_json_1 = get(url).json()
raw_json_2 = loads(get(url).text)

responses = [
    {"title": "Parsed with: re.sub()",
     "response": raw_text,
     "setup": "from re import sub;from json import loads;",
     "code": "loads(sub(r'" + '"(-*\d+(?:\.\d+)?)"' + "', r'" + "\\1', get(url).text))"},
    {"title": "Parsed with: requests.get(...).json()",
     "response": raw_json_1,
     "setup": "",
     "code": "get(url).json()"},
     {"title": "Parsed with: json.loads()",
     "response": raw_json_2,
     "setup": "from json import loads",
     "code": "loads(get(url).text)"}
]

print("\n============================================\n")
for res in responses:
    print("\t%s" % res["title"])

    print("\n>>> %s" % res["code"])
    print("%s ..." % str(res["response"])[0:200])

    result = test(res["response"])
    print("\n--------> Test %s! <--------" % ("passed" if result else "failed"))

    bench = timeit(res["code"],
                   setup="url='%s';from requests import get;%s" % (url, res["setup"]),
                   number=1)
    print("Benchmark: %f" % bench)

    print("\n============================================\n")

    
""" Output:

============================================

        Parsed with: re.sub()

>>> loads(sub(r'"(\d+(?:\.\d+)?)"', r'\1', get(url).text))
[{'id': 'bitcoin', 'name': 'Bitcoin', 'symbol': 'BTC', 'rank': 1, 'price_usd': 9308.99, 'price_btc': 1.0, '24h_volume_usd': 7456650000.0, 'market_cap_usd': 156795386599, 'available_supply': 16843437.0 ...

--------> Test passed! <--------
Benchmark: 0.151925

============================================

        Parsed with: requests.get(...).json()

>>> get(url).json()
[{'id': 'bitcoin', 'name': 'Bitcoin', 'symbol': 'BTC', 'rank': '1', 'price_usd': '9308.99', 'price_btc': '1.0', '24h_volume_usd': '7456650000.0', 'market_cap_usd': '156795386599', 'available_supply':  ...

--------> Test failed! <--------
Benchmark: 0.136815

============================================

        Parsed with: json.loads()

>>> loads(get(url).text)
[{'id': 'bitcoin', 'name': 'Bitcoin', 'symbol': 'BTC', 'rank': '1', 'price_usd': '9308.99', 'price_btc': '1.0', '24h_volume_usd': '7456650000.0', 'market_cap_usd': '156795386599', 'available_supply':  ...

--------> Test failed! <--------
Benchmark: 0.162506

============================================
"""