python 读取blob，, fo

python 读取blob，, fo

        for num in range(76802):            # if num == 0:            #     c[num] = imagedata[0:4]            #     d[num] = struct.unpack(‘i‘, c[num])            # elif num == 1:            #     c[num] = imagedata[4:8]            #     d[num] = struct.unpack(‘i‘, c[num])            # else:            #     c[num] = imagedata[8:12]                # c[num] = imagedata[10:12]                # d[num] = struct.unpack(‘4s‘, c[num])                #c[num] = imagedata[(num-1)*2+6:(num-1)*2+10]            if num == 3 :                c[num] = imagedata[1000:1002]                d[num] = struct.unpack(‘h‘, c[num])                print(c[num])                print(d[num])

imageData即blob类型。

利用struct包的unpack方法。其中参数参照下表：

python 读取blob