beginning implementations of CardCollection and some of its subclasses

BearOnline/cards/_card.py

@@ -0,0 +1,25 @@
+import abc
+from abc import ABC
+from functools import total_ordering
+
+@total_ordering
+class Card(ABC):
+    def __init__(self, rank, suit):
+        self._rank = rank
+        self._suit = suit
+
+    @abc.abstractmethod
+    def __lt__(self, other):
+        pass
+    
+    @abc.abstractmethod
+    def __eq__(self, other):
+        pass
+
+    @property
+    def rank(self):
+        return self._rank
+
+    @property
+    def suit(self):
+        return self._suit