fix pylint warnings in __init__ files

freqtrade/__init__.py

@@ -1,3 +1,4 @@
+""" FreqTrade bot """
 __version__ = '0.14.2'
 
 from . import main

freqtrade/exchange/__init__.py

@@ -1,3 +1,5 @@
+# pragma pylint: disable=W0603
+""" Cryptocurrency Exchanges support """
 import enum
 import logging
 from random import randint
@@ -77,7 +79,7 @@ def validate_pairs(pairs: List[str]) -> None:
 def buy(pair: str, rate: float, amount: float) -> str:
     if _CONF['dry_run']:
         global _DRY_RUN_OPEN_ORDERS
-        order_id = 'dry_run_buy_{}'.format(randint(0, 1e6))
+        order_id = 'dry_run_buy_{}'.format(randint(0, 10**6))
         _DRY_RUN_OPEN_ORDERS[order_id] = {
             'pair': pair,
             'rate': rate,
@@ -95,7 +97,7 @@ def buy(pair: str, rate: float, amount: float) -> str:
 def sell(pair: str, rate: float, amount: float) -> str:
     if _CONF['dry_run']:
         global _DRY_RUN_OPEN_ORDERS
-        order_id = 'dry_run_sell_{}'.format(randint(0, 1e6))
+        order_id = 'dry_run_sell_{}'.format(randint(0, 10**6))
         _DRY_RUN_OPEN_ORDERS[order_id] = {
             'pair': pair,
             'rate': rate,

freqtrade/tests/__init__.py

@@ -1,3 +1,4 @@
+# pragma pylint: disable=missing-docstring
 import json
 import os
 
@@ -14,6 +15,6 @@ def load_backtesting_data(ticker_interval: int = 5):
             abspath=path,
             pair=pair,
             ticker_interval=ticker_interval,
-        )) as fp:
+        )) as tickerdata:
-            result[pair] = json.load(fp)
+            result[pair] = json.load(tickerdata)
     return result