Question

I am familiar with using the os.system to run from the command line. However, I would like to be able to run a jar file from inside of a specific folder, eg. my ‘test’ folder. This is because my jar (located in my ‘test’ folder) requires a file inside of my ‘test’ folder. So, how would I write a function in my script that does the following: c:\test>java -jar run_this.jar required_parameter.ext ? I’m a python newbie so details are greatly appreciated. Thanks in advance.

Answer 1

Here is a small script to get you started. There are ways to make it ‘better’, but not knowing the full scope of what you are trying to accomplish this should be sufficient.

import os  if __name__ == '__main__':    startingDir = os.getcwd() # save our current directory    testDir = '\\test' # note that \ is windows specific, and we have to escape it    os.chdir(testDir) # change to our test directory    os.system('java -jar run_this.jar required_paramter.ext')    os.chdir(startingDir) # change back to where we started