Is it possible to numpy.vectorize an instance method?

Question

I\'ve found that the numpy.vectorize allows one to convert \'ordinary\' functions which expect a single number as input to a function which can also convert a list of inputs

Answer 1

If you want to use vectorized implementation of your method you can use excluded parameter like following:

class MyClass:
    def __init__(self, data):
        self.data = data
        self.my_vectorized_func = np.vectorize(self.my_func, excluded='self')

    def my_func(self, x):
        return pow(x, self.data)

With this, you can use your method like the non-vectorized one:

 In[1]: myclass = MyClass(3) # '3' will be the power factor of our function
 In[2]: myclass.my_vectorized_func([1, 2, 3, 4, 5])
Out[3]: array([  1,   8,  27,  64, 125])