cleanup predictions

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

predictions.py

@@ -1,49 +1,14 @@
+import time
+
 import records
 import os
 
 import maya
 import numpy as np
 import pandas as pd
-import requests
 from fbprophet import Prophet
 
-from scraper import Coin
-
-
-class MWT(object):
-    """Memoize With Timeout"""
-    _caches = {}
-    _timeouts = {}
-
-    def __init__(self, timeout=2):
-        self.timeout = timeout
-
-    def collect(self):
-        """Clear cache of results which have timed out"""
-        for func in self._caches:
-            cache = {}
-            for key in self._caches[func]:
-                if (time.time() - self._caches[func][key][1]) < self._timeouts[func]:
-                    cache[key] = self._caches[func][key]
-            self._caches[func] = cache
-
-    def __call__(self, f):
-        self.cache = self._caches[f] = {}
-        self._timeouts[f] = self.timeout
-
-        def func(*args, **kwargs):
-            kw = sorted(kwargs.items())
-            key = (args, tuple(kw))
-            try:
-                v = self.cache[key]
-                if (time.time() - v[1]) > self.timeout:
-                    raise KeyError
-            except KeyError:
-                v = self.cache[key] = f(*args, **kwargs), time.time()
-            return v[0]
-        func.func_name = f.__name__
-
-        return func
+from scraper import Coin, MWT
 
 
 @MWT(timeout=300)
@@ -52,7 +17,6 @@ def get_predictions(coin):
     c = Coin(coin.lower())
 
     q = "SELECT date as ds, value as y from api_coin WHERE name=:coin"
-    usd = requests.get('https://coinbin.org/btc').json()['coin']['usd']
 
     pro_db = records.Database(os.environ['HEROKU_POSTGRESQL_TEAL_URL'])
     rows = pro_db.query(q, coin=c.name)