Working on better backend

Author: AlvarBer

persimmon/backend/backend.py

@@ -3,13 +3,40 @@
 from sklearn.svm import SVC
 from sklearn.model_selection import cross_val_score, train_test_split, KFold
 
+
 def perform(train_data, estimator, cv, predict_data=np.array(0)):
     X, y = train_data.iloc[:, :-1], train_data.iloc[:, -1]
     if not predict_data.shape:
         return cross_val_score(estimator, X, y, cv=cv)
     else:
         return estimator.fit(X, y).predict(predict_data)
 
+"""
+def execute_graph():
+    queue = deque()
+    seen = {}
+    queue.append(self.blocks[0])
+    while queue:
+        queque, seen = self.explore_graph(queue.popleft(), queue, seen)
+
+def explore_graph(graph, block, queue: deque, seen: dict) -> (deque, dict):
+    args = []
+    for in_pin in graph[block].inputs:
+        if in_pin not in seen:
+            dependency = in_pin
+            if dependency in queue:
+                queue.remove(dependency)
+            queue, seen = self.explore_graph(dependency, queue, seen)
+        args.append(seen[pin_uid])
+    result = graph[block].function(*args)
+    for out_pin in graph[block].outputs:
+        seen[out_pin] = result[i]
+        for future_block in map(lambda x: x.block, out_pin.destinations):
+            if future_block not in queue:
+                queue.append(future_block)
+
+    return queue, seen
+"""
 
 if __name__ == '__main__':
     est = SVC()