Python 3 Patterns & Idioms / code / Metaclasses / MyList.py

# Metaclasses/MyList.py

def howdy(self, you):
    print("Howdy, " + you)

MyList = type('MyList', (list,), dict(x=42, howdy=howdy))

ml = MyList()
ml.append("Camembert")
print(ml)
print(ml.x)
ml.howdy("John")

""" Output:
['Camembert']
42
Howdy, John
"""
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