>>> from polinomis import Polinomi

>>> p = Polinomi()
>>> p[3], p[1], p[0] = 2, -1, 4
>>> print(p)
2x^3-x+4

>>> p[4] = 6
>>> print(p)
6x^4+2x^3-x+4

>>> q = Polinomi()
>>> q[2], q[1] = -5, 7
>>> print(q)
-5x^2+7x

>>> q[5], q[4] = -3, 2
>>> print(q)
-3x^5+2x^4-5x^2+7x