command line - opening a batch file that opens a text file in python -

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i writing script can execute batch file, needs open file in same folder first. current code is:

from subprocess import popen p = popen("mad8dl.bat <runthisto.txt>", cwd=r"c:\...\test") stdout, stderr = p.communicate()

where ... path folder. however, everytime run syntax error:

the syntax of command incorrect

any regarding syntax appreciated.

first, should remove < , > angle brackets code; pass filename, without brackets, batch file. (unless filename contain < , > characters, in case want know how managed since characters forbidden in filenames in windows).

second, code should like:

from subprocess import popen, pipe p = popen(["mad8dl.bat", "runthistoo.txt"], cwd=r"c:\...\test", stdout=pipe, stderr=pipe) stdout, stderr = p.communicate()

note list containing components of call, rather single string. note need specify stdout=pipe , stderr=pipe in popen() call if want use communicate() later on.


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