Add classes and files for voting

DecisionSystem/vote.py

@@ -0,0 +1,23 @@
+class Vote:
+    def __init__(self, voter, vote):
+        self._voter = voter
+        self._vote = vote
+
+    @property
+    def voter(self):
+        return self._voter
+
+    @voter.setter
+    def voter(self, value):
+        self._voter = value
+
+    @property
+    def vote(self):
+        return self._vote
+
+    @vote.setter
+    def vote(self, value):
+        self._vote = value
+
+    def to_string(self):
+        pass