[프로그래머스][Python] 키패드 누르기

def solution(numbers,hand):
    answer=""
    last_left_finger="*"
    last_right_finger="#"
    numpad={
        1:(1,1),2:(2,1),3:(3,1),
        4:(1,2),5:(2,2),6:(3,2),
        7:(1,3),8:(2,3),9:(3,3),
        "*":(1,4),0:(2,4),"#":(3,4)     
    }
    for number in numbers:
        if number in [1,4,7]:
            answer+="L"
            last_left_finger = number
        elif number in [3,6,9]:
            answer+="R"
            last_right_finger =number
        else :
            left_x_distance =abs(numpad[number][0]-numpad[last_left_finger][0])
            left_y_distance = abs(numpad[number][1]-numpad[last_left_finger][1])
            left_distance = left_x_distance + left_y_distance
            right_x_distance =abs(numpad[number][0]-numpad[last_right_finger][0])
            right_y_distance = abs(numpad[number][1]-numpad[last_right_finger][1])
            right_distance = right_x_distance + right_y_distance
            if left_distance < right_distance:
                answer+="L"
                last_left_finger=number
            elif left_distance > right_distance:
                answer+="R"
                last_right_finger=number
            elif left_distance ==right_distance:
                if hand =="left":
                    answer+="L"
                    last_left_finger=number
                elif hand=="right":
                    answer+="R"
                    last_right_finger = number
    return answer