Forward solution

main.py

def forwardSolution (buildings):
    haveSight = [buildings[0]]
    for b in buildings[1:]:
        if b > haveSight[0]:
            haveSight = [b]
            continue
        if b > haveSight[-1]:
            haveSight[-1] = b
        else:
            haveSight.append(b)
    return haveSight