<p>I have a function that resembles the one below. I'm not sure how to use the os module to get back to my original working directory at the conclusion of the jar's execution. </p>

<pre><code>def run(): 
    owd = os.getcwd()
    #first change dir to build_dir path
    os.chdir(testDir)
    #run jar from test directory
    os.system(cmd)
    #change dir back to original working directory (owd)
</code></pre>

<p>note: I think my code formatting is off - not sure why. My apologies in advance</p>

You simply need to add the line:
```
```
os.chdir(owd)
```
```
Just a note this was also answered in your other
question
.