读取具有固定列数但行数未知的二维数组的二进制文件的最快方法

Question

I have a binary files that has saved values of a 2d array. All values are saved in double format (8bytes) The data is written to the file row by row. I want to read the file as fast as possible without knowing how many rows the file has.

I am doing it this way, but I was wondering if there is a faster method than this:

with open("myfile", "rb") as f:
    byte = f.read(8)
    while byte != "":
        # Do stuff with byte.
        byte = f.read(8)

Answer 1

with open("myfile", "rb") as f:
    for i in f:
        #i is now your line, this only gathers it once.

btw your code is faulty the reasong your asking for it to be faster is because you stuck your self in a infinity loop when the line is empty you will get " "*8 not "" because you asked it to read the first 8