思路见此处

def get_mountain_peaks(height):
    peak_count = 0
    n = len(height)
    if n == 0:#如果一个山高都没有，return 0
        return 0
    for i in range(1,n-1):
        if height[i] > height[i-1] and height[i] > height[i+1]:
            peak_count += 1
    if height[0] > height[1] and n > 1:#边界情况
        peak_count += 1
    if height[-1] > height[-2] and n > 1:
        peak_count += 1
    print(peak_count)
def main():
    height = list(map(int,input().strip("[]").split(",")))
    get_mountain_peaks(height)

if __name__ =="__main__":
    main()