Port to python3

[Hierosme]

Here the port of pyOS to python3.

I have use 2to3 and two fixe.

• Imp lib is deprecated and replace by importlib with the new syntax
• hashlib require to decode the UTF-8 before anything when get password

Update the README for informe about the python version change and add a exemple about how start and login pyOS

It PR close #4 and #3

[crcollins]

Hey, thanks for looking into this. I don’t have any problems with this. The changes looks straightforward enough.

In tinkering with it for a minute, it seems like there are some minor output formatting issues. Though, I am not sure if there are other residual issues (the price you pay for no automated tests, ha!).

$ python2 pyOS.py 
STARTING
root x has permisison for /programs/login.py
user: root
password: 
root x has permisison for /programs/interpreter.py
root@pyOS:/$ ls programs
root x has permisison for /programs/ls.py
root r has permisison for /programs
<out> __pycache__    alias.py       cat.py         cd.py
cp.py          echo.py        edit.py        find.py
grep.py        head.py        help.py        history.py
interpreter.py login.py       ls.py          mkdir.py
mv.py          pwd.py         restart.py     rm.py
sed.py         shutdown.py    tac.py         tail.py
tee.py         touch.py       tree.py        which.py
write.py root@pyOS:/$ shutdown
root x has permisison for /programs/shutdown.py
SHUTTING DOWN  
$ git checkout Hierosme-master 
Switched to branch 'Hierosme-master'
$ python3 pyOS.py 
STARTING
root x has permisison for /programs/login.py
user: root
password: 
root x has permisison for /programs/interpreter.py
root@pyOS:/$ ls programs
root x has permisison for /programs/ls.py
root r has permisison for /programs
<out> __pycache__    alias.py       cat.py         cd.py          cp.py          echo.py        edit.py        find.py        grep.py        head.py        help.py        history.py     interpreter.py login.py       ls.py          mkdir.py       mv.py          pwd.py         restart.py     rm.py          sed.py         shutdown.py    tac.py         tail.py        tee.py         touch.py       tree.py        which.py       write.py root@pyOS:/$ 

I think these stem from slightly different outputs of the print calls from kernel/stream.py:61 (or maybe a bug in programs/ls.py). I didn’t look into it too much though.

Since this whole repo is mostly a hack anyway, I am not sure how much it is worth trying to fix it (or the hundreds of other historical issues).

[hierosme-nova]

I have take a look on the formating trouble.
Look like the python3 convertion is the root cause.

Unfortunaly to me i not totaly control/understand what to exactelly the code.
I understand ls make a thing similar to tabulate python module.

during my test i have optain good result with tabulate. But i suppose if it have been code like that, it's for have no dependency.

the only way i see is to recode it part on python3

[hierosme-nova]

Unfortunally nothing on the code previoslly write, create the output you have share to me.

I have write some code arround for reproduse something like the result you have share

STARTING
root x has permisison for /programs/login.py
user: root
password: 
root x has permisison for /programs/interpreter.py
root@pyOS:/$ ls
root x has permisison for /programs/ls.py
root r has permisison for /
<out> 
.idea       Design      README.md   __init__.py data        documents   kernel      
 root@pyOS:/$ ls programs
root x has permisison for /programs/ls.py
root r has permisison for /programs
<out> 
__pycache__    alias.py       cat.py         cd.py          cp.py          echo.py        
find.py        grep.py        head.py        help.py        history.py     interpreter.py 
ls.py          mkdir.py       mv.py          pwd.py         restart.py     rm.py          
shutdown.py    tac.py         tail.py        tee.py         touch.py       tree.py        
 root@pyOS:/$ shutdown
root x has permisison for /programs/shutdown.py
SHUTTING DOWN

[crcollins]

Thanks for your patience. I tinkered with this a bit more, and I think you may have it working again. I am not sure about other parts of the system though, so that will need more checks. I will try to test some things and see if there are other issues cause by this change.

Really though, I think my code here is way too buggy to be used. It seems like the last state I left it in was pretty broken. So I am not sure how much you are gaining by trying to reuse this.

[hierosme-nova]

No trouble, if it take you too much time i understand.

I Target MicroPython, and you work by it design is very close as my target.
At frist i´ll focus you Stream to sys.stdXX system follow by you Syscall system.

I need a foctional model that is why i would like a pyOS it work.

I confess, you actual work can't be ported like that to MicroPython,
But from my point you syscall system is clearly the way.

Here where i try:
Gitlab: https://gitlab.com/Tuuux/galaxie-shell/-/tree/develop
Wokwi: (Click play, then Ctrl + D to restart the board)
https://wokwi.com/projects/312818372713644610

You'll directlly understand why pyOS must survive