Help! UnboundLocalError: local variable 'B' referenced before assignment. Thanks!

            if a >= 3:
                A = (3 ^(int(log((a/3), 2)* 3)))
            if b >= 3:
                B = (3 ^(int(log((b/3), 2)* 3)))
            if c >= 3:
                C = (3 ^(int(log((c/3), 2)* 3)))
            if d >= 3:
                D = (3 ^(int(log((d/3), 2)* 3)))
            if e >= 3:
                E = (3 ^(int(log((e/3), 2)* 3)))
            if f >= 3:
                F = (3 ^(int(log((f/3), 2)* 3)))
            if g >= 3:
                G = (3 ^(int(log((g/3), 2)* 3)))
            if h >= 3:
                H = (3 ^(int(log((h/3), 2)* 3)))
            if i >= 3:
                I = (3 ^(int(log((i/3), 2)* 3)))
            if j >= 3:
                J = (3 ^(int(log((j/3), 2)* 3)))

            puntaje  = str(int(A + B + C + D + E + F + G + H + I + J + K + L))

Initialize your variables A to L this way:
A = B = C = D = E = F = G = H = I = J = K = L = 0
before you reach your if statements.

puntaje  = str(int(A + B + C + D + E + F + G + H + I + J + K + L))

If "B", or any variable is less than 3, then the if statement is not satisfied and B (or any variable) is never declared. Some refactored code

puntaje = 0
for var in [a, b, c, d, e, f, g, h, i, j]:
    if var >= 3:
        puntaje + = 3 ^(int(log((var/3), 2)* 3))
print puntaje
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