Attempt to launch another .exe and save the console output to a text file

# -*- coding: utf-8 -*-

#To get / save the console output of the process started by subprocess
# ref: https://www.it-swarm-ja.tech/ja/python/subprocesscall%EF%BC%88%EF%BC%89%E3%81%AE%E5%87%BA%E5%8A%9B%E3%82%92%E5%8F%96%E5%BE%97%E3%81%99%E3%82%8B/968744582/

import subprocess

def main(): #For execution switching
    run__main1()

# sec:Get and save console output

def run__main1():
    #result:
    # test.exe console output can be saved
    # test.bat can also save console output,.bat is also possible
    
  # case: FAIL
    # subprocess.call("test.exe > res.log.txt")
    
  # case: Popen(.., stdout=..)use
    with open("res.log.txt", 'w') as file_log:
        proc = subprocess.Popen(
            ["test.bat"], 
            stdout=file_log, stderr=subprocess.PIPE)
        proc.communicate() #Required for standby, if output is required: stdout, stderr = proc.communicate()
    print("return code:", proc.returncode) # DEBUG:For standby / end confirmation
  # case: end
    
    print("ended.")

# sec: entry

if __name__ == "__main__": main()

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