removing trailing spaces

utils/iter_utils.py

@@ -5,7 +5,7 @@ import time
 
 
 class ThisThreadGenerator(object):
-    def __init__(self, generator_func, user_param=None): 
+    def __init__(self, generator_func, user_param=None):
         super().__init__()
         self.generator_func = generator_func
         self.user_param = user_param
@@ -13,30 +13,30 @@ class ThisThreadGenerator(object):
 
     def __iter__(self):
         return self
-        
+
     def __next__(self):
-        if not self.initialized:  
+        if not self.initialized:
             self.initialized = True
             self.generator_func = self.generator_func(self.user_param)
 
         return next(self.generator_func)
 
 class SubprocessGenerator(object):
-    def __init__(self, generator_func, user_param=None, prefetch=2): 
-        super().__init__()        
+    def __init__(self, generator_func, user_param=None, prefetch=2):
+        super().__init__()
         self.prefetch = prefetch
         self.generator_func = generator_func
         self.user_param = user_param
         self.sc_queue = multiprocessing.Queue()
         self.cs_queue = multiprocessing.Queue()
         self.p = None
-    
+
     def process_func(self):
         self.generator_func = self.generator_func(self.user_param)
-        while True:        
+        while True:
             while self.prefetch > -1:
                 try:
-                    gen_data = next (self.generator_func)              
+                    gen_data = next (self.generator_func)
                 except StopIteration:
                     self.cs_queue.put (None)
                     return
@@ -47,17 +47,17 @@ class SubprocessGenerator(object):
 
     def __iter__(self):
         return self
-        
+
     def __next__(self):
         if self.p == None:
             self.p = multiprocessing.Process(target=self.process_func, args=())
             self.p.daemon = True
             self.p.start()
-    
+
         gen_data = self.cs_queue.get()
         if gen_data is None:
             self.p.terminate()
             self.p.join()
             raise StopIteration()
-        self.sc_queue.put (1)        
-        return gen_data
+        self.sc_queue.put (1)
+        return gen_data