Upgrade your OctoPrint install to Python 3!

[Charlie_Powell]

@dmyers7 - you might want to open a new topic, in 'Get Help' as the backup really should work.

[dmyers7]

To reply to myself. I have Windows running in Parallels and decided to use MS Edge to pull a copy of a similar backup from another OctoPi instance, .... restored that to the refreshed box and it works..... Something in Safari and FireFox on a Mac I suppose. That will be a good enough workaround for me, but weird in general. I can start another thread to have that looked at.

[AdamLD]

Hey folks, just mentioning this in case it helps other newbies. I didn't realize that the instance of Python that's used by OctoPrint is separate from the one that's used by Raspberry Pi OS.
You can see the OctoPrint Python version number by scrolling to the bottom of the OctoPrint web page.
Kudos to @Charlie_Powell for setting me straight on this.

[Quas7]

worked flawless besides the known bed leveler plugin, which also compiled single core for over 15min to tell me, it is not working properly afterwards. ;D

[sblionel]

Worked perfectly for me as well (after the long process of upgrading OctoPi and other things I had to reinstall.)

[jneilliii]

@Charlie_Powell

However, if you are using the Klipper Plugin, someone mentioned it was not Py3 compatible.

There is a python 3 compatible fork and that person is taking over as maintainer to the official repo.

[jneilliii]

@Quas7

worked flawless besides the known bed leveler plugin

You probably just need to run the command shown on the known issues page...

jneilliii/OctoPrint-BedLevelVisualizer

[Muldoon]

I ran both of the commands as root.
It says that there were some error messages though...

Detecting system info...
OctoPi version: 0.17.0
Getting OctoPrint version...
OctoPrint version: 1.4.2
Reading installed plugins...
2020-09-10 18:06:56,358 - octolapse.init - INFO - Release mode detected.
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "/usr/lib/python2.7/logging/init.py", line 1676, in shutdown
h.close()
File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/logging/handlers.py", line 32, in close
self._executor.shutdown(wait=True)
AttributeError: 'OctolapseConsoleHandler' object has no attribute '_executor'
Error in sys.exitfunc:
Traceback (most recent call last):
File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "/usr/lib/python2.7/logging/init.py", line 1676, in shutdown
h.close()
File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/logging/handlers.py", line 32, in close
self._executor.shutdown(wait=True)
AttributeError: 'OctolapseConsoleHandler' object has no attribute '_executor'
Traceback (most recent call last):
File "upgrade.py", line 556, in
plugin_keys = read_plugins_from_backup(backup_location)
File "upgrade.py", line 363, in read_plugins_from_backup
with zipfile.ZipFile(backup_path, 'r') as zip_ref:
File "/usr/lib/python3.7/zipfile.py", line 1204, in init
self.fp = io.open(file, filemode)
FileNotFoundError: [Errno 2] No such file or directory: '/home/pi/.octoprint/data/backup/octoprint-backup-20200910-180656.zip'

[5ft24]

@dmyers7

Yes. But since .17 only recently came out it makes sense then that a majority of us have not updated to .17 and therefore this script is not of use. Is there another way to upgrade Python then if it will become important to do so. Your help is appreciated.

0.17 has been out since November of 2019. Almost a year

[Oli_vier]

thanks, i will try this evening

[CRCinAU]

I got this too - you need to run it as the pi user, not as root...

[bbc0]

I'm an active user of Octopi but no longer a techie. Would it not be possible to include this conversion in the next update?

[quintz]

Good morning,

i just upgraded my Octopi to Python 3 but then realized some addons I wanted to use aren't compatible.
Then I wanted to revert my installation with the downgrade script and now I'm left with no OctoPrint Version:

OctoPrint version : unknown
OctoPi version : 0.17.0

Can anyone help me with this one? I don't fancy to reinstall my whole raspberry....

When I try to rerun the upgrade script:

pi@octopi:~ $ python3 upgrade.py
OctoPrint Upgrade to Py 3 (v2.0.4)

Hello!
This script will move your existing OctoPrint configuration from Python 2 to Python 3
This script requires an internet connection and it will disrupt any ongoing print jobs.

It will install the latest version of OctoPrint (1.4.2) and all plugins.
No configuration or other files will be overwritten

Press [enter] to continue or ctrl-c to quit

Detecting system info...
OctoPi version: 0.17.0
Hmm, seems like you don't have an environment at /home/pi/oprint

[Charlie_Powell]

@quintz Could you open a new 'Get help' topic so I can talk it through later today, since it gets confusing with multiple conversations here.

@bbc0 - The next version of OctoPi is going to be Python 3 default (0.18). The script is easy to use, even for someone who's not a 'techie'!

@Muldoon - do NOT run the commands as root, since it messes with the permissions.
The first error, you can ignore (Made by OctoLapse not playing nice with reading the plugins), the second is because it is run as root.

[Quas7]

thanks a lot for this hint!

[Detlev_Rackow]

Sorry, I use Octopi and I use Klipper, but I don't know much about Python. I installed Octopi 017 on my Raspi 3B, and I installed Klipper in the official way, meaning a git pull and then starting the installation script. I don't know if this creates a seperate virtual environment. Updating Klipper works similar: The official way is to do a git pull, then restart the service. In some cases, a new MCU-firmware is an additional step.

As the functionality of Klipper is critical for my printer, I will wait until there is a clear statement from the Klipper developers.

Best,

Detlev

[coubi64]

I've got a little issue on display. Installed on a Raspberry Pi 3B.

Resources don't update (cf screenshot). Resource Monitor Tab updates correctly.

[derekpurdy]

Is there a way to know which plugins aren't supporitng python3 before updating?

[b-morgan]

@derekpurdy, Yes, there are a couple of ways. If you are running OctoPrint 1.4.2, then the Plugin Manager will show you directly. For 1.4.2 and earlier versions, you can install the plugin Python 3 Check by @jneilliii using the Plugin Manager.

Its homepage is https://github.com/jneilliii/OctoPrint-Python3PluginCompatibilityCheck.

[derekpurdy]

Thanks![quote="b-morgan, post:47, topic:23973, full:true"]
@derekpurdy, Yes, there are a couple of ways. If you are running OctoPrint 1.4.2, then the Plugin Manager will show you directly. For 1.4.2 and earlier versions, you can install the plugin Python 3 Check by @jneilliii using the Plugin Manager.

Its homepage is https://github.com/jneilliii/OctoPrint-Python3PluginCompatibilityCheck.
[/quote]

Thanks so much! I see I have a couple, but they aren't so important.