avoid single char variable names

analyze.py

@@ -107,8 +107,8 @@ def plot_dataframe(dataframe, pair):
     import matplotlib.pyplot as plt
 
     # Three subplots sharing x axe
-    f, (ax1, ax2, ax3) = plt.subplots(3, sharex=True)
-    f.suptitle(pair, fontsize=14, fontweight='bold')
+    fig, (ax1, ax2, ax3) = plt.subplots(3, sharex=True)
+    fig.suptitle(pair, fontsize=14, fontweight='bold')
     ax1.plot(dataframe.index.values, dataframe['close'], label='close')
     ax1.plot(dataframe.index.values, dataframe['close_30_ema'], label='EMA(60)')
     ax1.plot(dataframe.index.values, dataframe['close_90_ema'], label='EMA(120)')
@@ -129,8 +129,8 @@ def plot_dataframe(dataframe, pair):
 
     # Fine-tune figure; make subplots close to each other and hide x ticks for
     # all but bottom plot.
-    f.subplots_adjust(hspace=0)
-    plt.setp([a.get_xticklabels() for a in f.axes[:-1]], visible=False)
+    fig.subplots_adjust(hspace=0)
+    plt.setp([a.get_xticklabels() for a in fig.axes[:-1]], visible=False)
     plt.show()
 
 

main.py

@@ -63,8 +63,8 @@ class TradeThread(threading.Thread):
             while not _should_stop:
                 try:
                     self._process()
-                except (ConnectionError, JSONDecodeError, ValueError) as e:
-                    msg = 'Got {} during _process()'.format(e.__class__.__name__)
+                except (ConnectionError, JSONDecodeError, ValueError) as error:
+                    msg = 'Got {} during _process()'.format(error.__class__.__name__)
                     logger.exception(msg)
                 finally:
                     Session.flush()

rpc/telegram.py

@@ -304,10 +304,10 @@ class TelegramHandler(object):
                 bot = bot or TelegramHandler.get_updater(conf).bot
                 try:
                     bot.send_message(conf['telegram']['chat_id'], msg, parse_mode=parse_mode)
-                except NetworkError as e:
+                except NetworkError as error:
                     # Sometimes the telegram server resets the current connection,
                     # if this is the case we send the message again.
-                    logger.warning('Got Telegram NetworkError: {}! trying one more time'.format(e.message))
+                    logger.warning('Got Telegram NetworkError: {}! trying one more time'.format(error.message))
                     bot.send_message(conf['telegram']['chat_id'], msg, parse_mode=parse_mode)
             except Exception:
                 logger.exception('Exception occurred within Telegram API')

utils.py

@@ -17,8 +17,8 @@ def get_conf(filename='config.json'):
     """
     global _cur_conf
     if not _cur_conf:
-        with open(filename) as fp:
-            _cur_conf = json.load(fp)
+        with open(filename) as file:
+            _cur_conf = json.load(file)
             validate_conf(_cur_conf)
     return _cur_conf
 
@@ -40,11 +40,11 @@ def validate_conf(conf):
     if not isinstance(conf.get('minimal_roi'), dict):
         raise ValueError('minimal_roi must be a dict')
 
-    for i, (minutes, threshold) in enumerate(conf.get('minimal_roi').items()):
+    for index, (minutes, threshold) in enumerate(conf.get('minimal_roi').items()):
         if not isinstance(minutes, str):
-            raise ValueError('minimal_roi[{}].key must be a string'.format(i))
+            raise ValueError('minimal_roi[{}].key must be a string'.format(index))
         if not isinstance(threshold, float):
-            raise ValueError('minimal_roi[{}].value must be a float'.format(i))
+            raise ValueError('minimal_roi[{}].value must be a float'.format(index))
 
     if conf.get('telegram'):
         telegram = conf.get('telegram')
@@ -95,7 +95,7 @@ def validate_bittrex_pairs(pairs):
     data = Bittrex(None, None).get_markets()
     if not data['success']:
         raise RuntimeError('BITTREX: {}'.format(data['message']))
-    available_markets = [m['MarketName'].replace('-', '_')for m in data['result']]
-    for p in pairs:
-        if p not in available_markets:
-            raise ValueError('Invalid pair: {}'.format(p))
+    available_markets = [market['MarketName'].replace('-', '_')for market in data['result']]
+    for pair in pairs:
+        if pair not in available_markets:
+            raise ValueError('Invalid pair: {}'.format(pair))