floats!

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

Pipfile

@@ -12,3 +12,5 @@ pyquery = "*"
 pandas = "*"
 html5lib = "*"
 bs4 = "*"
+requests = "*"
+simplejson = "*"

scraper.py

@@ -5,6 +5,7 @@ from pyquery import PyQuery as pq
 
 import time
 from collections import OrderedDict
+from decimal import Decimal
 
 url = 'https://coinmarketcap.com/currencies/views/all/'
 session = requests.Session()
@@ -73,7 +74,7 @@ class Coin():
     def btc(self):
         coins = get_coins()
         rate = coins['btc']['usd']
-        return float(self.usd / rate)
+        return Decimal("{0:.8f}".format(self.usd / rate))
 
     def value(self, coin):
         """Example: BTC -> ETH"""
@@ -100,7 +101,7 @@ def get_coins():
         name = row[2]
         ticker = row[3].lower()
         usd = float(row[5][1:].replace(',', ''))
-        btc = usd / btc_value
+        btc = Decimal("{0:.8f}".format(usd / btc_value))
 
         coins_db.update({ticker: {'rank': rank, 'name': name, 'ticker': ticker, 'usd': usd, 'btc': btc}})
 

server.py

@@ -110,7 +110,7 @@ def get_exchange_value(coin1, coin2, n):
     return jsonify(coin={
         # 'name': c.name,
         # 'ticker': c.ticker,
-        'value': v * n,
+        'value': float(v) * n,
         'value.coin': coin2,
         'exchange_rate': v
     })

templates/index.html

@@ -83,7 +83,7 @@
 {
   "coins": [{% for coin in coins %}
     "<strong><a href="/{{ coin['ticker'] }}">{{ coin['ticker'] }}</a></strong>":
-      {{ coin }},{% endfor %}
+      {{ coin|tojson }},{% endfor %}
   ]
 }
       </pre>