ch06

ch06/oop/mro.py

@@ -0,0 +1,31 @@
+# oop/mro.py
+class A:
+    label = 'a'
+
+class B(A):
+    pass  # was: label = 'b'
+
+class C(A):
+    label = 'c'
+
+class D(B, C):
+    pass
+
+
+d = D()
+print(d.label)  # 'c'
+print(d.__class__.mro())  # notice another way to get the MRO
+# prints:
+# [<class '__main__.D'>, <class '__main__.B'>,
+#  <class '__main__.C'>, <class '__main__.A'>, <class 'object'>]
+
+
+"""
+$ python oop/mro.py
+c
+[
+    <class '__main__.D'>, <class '__main__.B'>,
+    <class '__main__.C'>, <class '__main__.A'>,
+    <class 'object'>
+]
+"""