Please help me Write a file while reading

[vamsicoolman]

I am having a service which run using a batch file in command prompt, I want to read the whole information running in the console and want to write it to an another file but I am able to write it only when the service is closed completely.

So I want to write information in the meanwhile

Please do let me help I am new here...

[Stefano Mtangoo]

So, what do you want Python to do for you?

[vamsicoolman]

I am running the service as a process in python and I am able to read the content of the service but I am able to write the content only when the complete service is run completely, as the service is an iterative process it would take 1 hr to complete but I want to be written it meanwhile the service is running......

[Gribouillis]

Assuming the name of your service is service , you could try to run this program

# runservice.py
import subprocess as sp
import sys
SERVICE_COMMAND = "service"

def run_service(command):
    with open("output.txt", "w") as output_file:
        process = sp.Popen(command, shell=True, stdout=sp.PIPE)
        for line in process.stdout:
            for f in (output_file, sys.stdout):
                f.write(line)
        process.wait()

if __name__ == "__main__":
   run_service(SERVICE_COMMAND)

[vamsicoolman]

Warning: 'with' will become a reserved keyword in Python 2.6

I am receiving this warning and nothing is being written in the file

[vamsicoolman]

Thank you Mr.Gribouillis

it is really a very helpful stuff for me can you please guide me regarding learning the modules of python and refer me some books if possible..

[vamsicoolman]

and please tell me the use of

if __name__ == "__main__":
run_service(SERVICE_COMMAND)

[Stefano Mtangoo]

and please tell me the use of

if __name__ == "__main__":
run_service(SERVICE_COMMAND)

This tella python to run the function if the file is run directly and not imported somewhere