numpoly.ndpoly.todict

ndpoly.todict() → Dict[Tuple[int, ...], numpy.ndarray]

Cast to dict where keys are exponents and values are coefficients.

Return:

Dictionary where keys are exponents and values are coefficients.

Example:

>>> q0, q1 = numpoly.variable(2)
>>> poly = 2*q0**4-3*q1**2+14
>>> poly
polynomial(2*q0**4-3*q1**2+14)
>>> poly.todict() == {(0, 0): 14, (4, 0): 2, (0, 2): -3}
True