the errors when using the subprocess.Open

[sherry1125]

i am a beginner, i tried to have python to run a binary file
my code looks like this:

import subprocess as sp
p2=sp.Open(['./nandpro','-0' repr(rdppa),'-b',repr(block),'-c',repr(ch_num),'-d',datafilename,'-m',metafilename,'-f','bad_mark.txt'],stdout=sp.PIPE,stderr=sp.PIPE)

It means to create two file metafile and datafile,read data from flash and write them to these files.But the result of run the code don't meet my demand.(PS. I run ./nandpro -0 0x96 -b 100 -c 0 -d datafilename -m metafilename -f badmark.txt the result is right)
print number

i am using python 2.7

please help, thank you very much.

[bvdet]

I think you need to call subprocess.call or subprocess.Pope n. See Python documentation.