How to add property to a class dynamically?

Question

The goal is to create a mock class which behaves like a db resultset.

So for example, if a database query returns, using a dict expression, {\'ab\':100, \'cd\'

Answer 1

Not sure if I completely understand the question, but you can modify instance properties at runtime with the built-in __dict__ of your class:

class C(object):
    def __init__(self, ks, vs):
        self.__dict__ = dict(zip(ks, vs))


if __name__ == "__main__":
    ks = ['ab', 'cd']
    vs = [12, 34]
    c = C(ks, vs)
    print(c.ab) # 12