python - Read a single byte from large file -

i have function want read single byte large file. problem after amount of file reads memory on pc jumps steady 1.5gb 4gb , higher depending on how many file reads. (i break @ 80 files because higher crash pc)

all want 1 byte , not whole file. please.

    def mem_test():         count = 0         dirpath, dnames, fnames in scandir.walk(restorepaths[0]):             f in fnames:                 if 'dir.edb' in f or 'priv.edb' in f:                     f = open(os.path.join(dirpath, f), 'rb')                     f.read(1) #problem line!                     f.close()                     if count > 80:                         print 'exit'                         sys.exit(1)                                         count += 1 mem_test() 

to address memory issue, think you'd want use generator:

def mem_test():     dirpath, dnames, fnames in scandir.walk(restorepaths[0]):         f in fnames:             if 'dir.edb' in f or 'priv.edb' in f:                 open(os.path.join(dirpath, f), 'rb') f:                     yield f.read(1) #problem line!  results = [x x in mem_test()]