Python - suma polinomios

p=[(4,3),(2,1),(1,1)]

q=[(3,2),(2,2),(1,2),(0,1)]

r=[]

def suma(p, q):

    if len(q)>len(p):

        t=q

        s=p

    else:

        t=p

        s=q

    for i in range(len(t)):

        esta = False

        for j in range(len(s)):

            if t[i][0] == s[j][0]:

                r.append((t[i][0],t[i][1]+s[j][1]))

                esta = True

        if not esta:

            if i<len(s):

                r.append((s[i][0],s[i][1]))

            r.append((t[i][0],t[i][1]))

suma(p,q)

print(r)