title: Opening .py files with micropython on TI Nspire
body: <p>I uploaded <a href="https://github.com/Vogtinator/micropython" rel="nofollow noreferrer">Fabian Vogt's micropython</a> port to my TI Nspire CX CAS, together with a couple of *.py.tns files to try. I can't find a way to load/launch those files. </p>
  
  <p>As micropython does not include the os module, I can't use os.chdir to change the current directory and load the *.py files from the python shell. I tried from python shell:  open("documents/mydirectory/myfile")<br>
  with different extensions .py or .py.tns, without success. </p>
  
  <p>I don't think the Nspire has anything like the terminal commmand line either. </p>
  
  <p>Thanks for your help,</p>