Python - 存储数组的索引号，并将该值与整数

Question

我正在试图弄清楚如何存储值的索引或两者。步骤进行：

• 扫描阵列（逐个）
• 比较每个值大于某个数字
• 如果更大，请保存索引编号和值
• 接下来，检查下一个号码，是否大于某个号码？转到下一个
• 如果数字小于某个数字，则打破

y1 = []                 % Is a 128 length array
flagcheck = 0           %check for when found a number greater than needed
startofindex = []       %Place to save where the 1st number was found
endofindex = []         %Place where end

for g in y1:
    if (y1.count(g) > 0.001):
        startofindex.append(enumerate(y1.count(g))) % I know this won't work but I can't seem to find the best sol'n
        flagcheck = 1;
        while (flagcheck == 1):
            for g in y1:
                if (y1.count(g) <= 0.001):
                    endofindex.append(enumerate(y1.count(g)))
                    break

我想使用index来格式化特定点的图形轴。