fix pep8 warnings

freqtrade/optimize/hyperopt.py

@@ -49,7 +49,7 @@ OPTIMIZE_CONFIG = {
 }
 
 # Monkey patch config
-from freqtrade import main
+from freqtrade import main  # noqa
 main._CONF = OPTIMIZE_CONFIG
 
 
@@ -102,6 +102,7 @@ SPACE = {
     ]),
 }
 
+
 def log_results(results):
     "if results is better than _TO_BEAT show it"
 
@@ -118,6 +119,7 @@ def log_results(results):
         print('.', end='')
         sys.stdout.flush()
 
+
 def optimizer(params):
     global _CURRENT_TRIES
 
@@ -148,7 +150,7 @@ def optimizer(params):
         'result': result,
         'results': results
         }
-    
+
     # logger.info('{:5d}/{}: {}'.format(_CURRENT_TRIES, TOTAL_TRIES, result))
     log_results(result_data)