numpy.
frompyfunc
Takes an arbitrary Python function and returns a NumPy ufunc.
Can be used, for example, to add broadcasting to a built-in Python function (see Examples section).
An arbitrary Python function.
The number of input arguments.
The number of objects returned by func.
Returns a NumPy universal function (ufunc) object.
ufunc
See also
vectorize
Evaluates pyfunc over input arrays using broadcasting rules of numpy.
Notes
The returned ufunc always returns PyObject arrays.
Examples
Use frompyfunc to add broadcasting to the Python function oct:
oct
>>> oct_array = np.frompyfunc(oct, 1, 1) >>> oct_array(np.array((10, 30, 100))) array(['0o12', '0o36', '0o144'], dtype=object) >>> np.array((oct(10), oct(30), oct(100))) # for comparison array(['0o12', '0o36', '0o144'], dtype='<U5')