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Cpeck11 9 20 #178

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Cpeck11 9 20 #178

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fdab963
solves task 1
cori-peck Nov 9, 2020
14780ef
solves bonus task - tests
cori-peck Nov 9, 2020
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Binary file added __pycache__/client3.cpython-38.pyc
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11 changes: 8 additions & 3 deletions client3.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,14 +35,17 @@ def getDataPoint(quote):
stock = quote['stock']
bid_price = float(quote['top_bid']['price'])
ask_price = float(quote['top_ask']['price'])
price = bid_price
price = (bid_price + ask_price) /2
return stock, bid_price, ask_price, price

def getRatio(price_a, price_b):
""" Get ratio of price_a and price_b """
""" ------------- Update this function ------------- """
""" Also create some unit tests for this function in client_test.py """
return 1
if (price_b == 0):
#when price_b is 0 avoid throwing ZeroDivisionError
return
return price_a/price_b

# Main
if __name__ == "__main__":
Expand All @@ -52,8 +55,10 @@ def getRatio(price_a, price_b):
quotes = json.loads(urllib.request.urlopen(QUERY.format(random.random())).read())

""" ----------- Update to get the ratio --------------- """
prices = {}
for quote in quotes:
stock, bid_price, ask_price, price = getDataPoint(quote)
prices[stock] = price
print ("Quoted %s at (bid:%s, ask:%s, price:%s)" % (stock, bid_price, ask_price, price))

print ("Ratio %s" % getRatio(price, price))
print ("Ratio %s" % getRatio(prices['ABC'], prices['DEF']))
28 changes: 27 additions & 1 deletion client_test.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import unittest
from client3 import getDataPoint
from client3 import getDataPoint, getRatio

class ClientTest(unittest.TestCase):
def test_getDataPoint_calculatePrice(self):
Expand All @@ -8,16 +8,42 @@ def test_getDataPoint_calculatePrice(self):
{'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
]
""" ------------ Add the assertion below ------------ """
for quote in quotes:
stock = quote['stock']
bid_price = float(quote['top_bid']['price'])
ask_price = float(quote['top_ask']['price'])
price = (bid_price + ask_price) /2
dataPoint = (stock, bid_price, ask_price, price)
self.assertEqual (getDataPoint(quote), dataPoint)

def test_getDataPoint_calculatePriceBidGreaterThanAsk(self):
quotes = [
{'top_ask': {'price': 119.2, 'size': 36}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 120.48, 'size': 109}, 'id': '0.109974697771', 'stock': 'ABC'},
{'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
]
""" ------------ Add the assertion below ------------ """
for quote in quotes:
stock = quote['stock']
bid_price = float(quote['top_bid']['price'])
ask_price = float(quote['top_ask']['price'])
price = (bid_price + ask_price) /2
dataPoint = (stock, bid_price, ask_price, price)
self.assertEqual (getDataPoint(quote), dataPoint)


""" ------------ Add more unit tests ------------ """
def test_getRatio(self):
quotes = [
{'top_ask': {'price': 119.2, 'size': 36}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 120.48, 'size': 109}, 'id': '0.109974697771', 'stock': 'ABC'},
{'top_ask': {'price': 121.68, 'size': 4}, 'timestamp': '2019-02-11 22:06:30.572453', 'top_bid': {'price': 117.87, 'size': 81}, 'id': '0.109974697771', 'stock': 'DEF'}
]
prices = {}
for quote in quotes:
stock, bid_price, ask_price, price = getDataPoint(quote)
prices[stock] = price

self.assertEqual(getRatio(prices['ABC'], prices['DEF']), (prices['ABC'] / prices['DEF']))




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