Added classtools

progrmoiz · progrmoiz · commit 90d3f4fe6480 · 2017-10-03T21:27:40.000+05:00
diff --git a/classtools.py b/classtools.py
@@ -0,0 +1,36 @@
+# File classtools.py (new)
+"Assorted class utilities and tools"
+
+class AttrDisplay:
+    """
+    Provide an inheritable display overload method that shows
+    instance with their class name and a name=value pair for
+    each attribute stored on the instance itself (but not attrs
+    inherited from its classes). Can be mixed into any class,
+    and will work on any instance
+    """
+    def __gatherAttrs(self):
+        attrs = []
+        for key in sorted(self.__dict__):
+            attrs.append("%s=%s" % (key, getattr(self, key)))
+        return attrs
+
+    def __repr__(self):
+        return "[%s: %s]" % (self.__class__.__name__, self.__gatherAttrs())
+
+if __name__ == "__main__":
+
+    class TopTest(AttrDisplay):
+        count = 0
+
+        def __init__(self):
+            self.attr1 = TopTest.count
+            self.attr2 = TopTest.count+1
+            TopTest.count += 2
+
+    class SubTest(TopTest):
+        pass
+
+    X, Y = TopTest(), SubTest()
+    print(X)
+    print(Y)
