Initial commit

Solutions/7_5/mymeta.py

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+# mymeta.py
+
+class mytype(type):
+    @staticmethod
+    def __new__(meta, name, bases, __dict__):
+        print("Creating class :", name)
+        print("Base classes   :", bases)
+        print("Attributes     :", list(__dict__.keys()))
+        return super().__new__(meta, name, bases, __dict__)
+
+class myobject(metaclass=mytype):
+    pass
+
+class Stock(myobject):
+    def __init__(self,name,shares,price):
+        self.name = name
+        self.shares = shares
+        self.price = price
+    def cost(self):
+        return self.shares*self.price
+    def sell(self,nshares):
+        self.shares -= nshares
+
+class MyStock(Stock):
+    pass