:\pp \system\mediastart ora-lp jpg :\pp \system\mediastart sousa au because the start command can run any file and command linethere is no reason it cannot also be used to start an independently running python programc:\pp \system\processesstart child py this works because python is registered to open names ending in py when it is installed the script child py is launched independently of the dos console window even though we didn' provide the name or path of the python interpreter program because child py simply prints message and exitsthoughthe result isn' exactly satisfyinga new dos window pops up to serve as the script' standard outputand it immediately goes away when the child exits to do betteradd an input call at the bottom of the program file to wait for key press before exitingc:\pp \system\processestype child-wait py import ossys print('hello from child'os getpid()sys argv[ ]input("press "don' flash on windows :\pp \system\processesstart child-wait py now the child' dos window pops up and stays up after the start command has returned pressing the enter key in the pop-up dos window makes it go away using start in python scripts since we know that python' os system and os popen can be called by script to run any command line that can be typed at dos shell promptwe can also start independently running programs from python script by simply running dos start command line for instancec:\pp \system\mediapython import os cmd 'start lp -preface-preview htmlos system(cmd start ie browser runs independent the python os system calls here start whatever web page browser is registered on your machine to open html files (unless these programs are already runningthe launched programs run completely independent of the python session--when running dos start commandos system does not wait for the spawned program to exit parallel system tools