Python 3.7 does not work

[sailmich]

Rpi zero with Raspian buster light. Beta 4.10977
I did a fresh installation with all apt-get updates. I put gbridge plugin in the correct folder. After restart I would select gbridge in hardware drop down menue but it isn't there. In domoticz log I got Failed dynamic library load, install the latest libpython3.x library
I double checked that latest libpython3 is installed and matched to python version. Is it a problem with buster/domoticz or Python3.7/domoticz?
Appreciate every hint

[EddyG]

Go back to Stretch, because you might encounter more problems with Buster on the way.
B.t.w. my test system runs fine. Did not test any plugin yet, but no error at startup of Domoticz.

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Status: PluginSystem: Started, Python version '3.7.3'.

Did you install the dev system?

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sudo apt-get install python3-dev

[sailmich]

Go back to Stretch, because you might encounter more problems with Buster on the way.
B.t.w. my test system runs fine. Did not test any plugin yet, but no error at startup of Domoticz.

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Status: PluginSystem: Started, Python version '3.7.3'.

Did you install the dev system?

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sudo apt-get install python3-dev

I will go back to stretch. And yes I had python3-dev installed.
Thanks for your answer and comments!

[Solderbro]

Hello,

running buster light here and the python3-dev is a must to get the library to the system. Everything else works at a glance with buster-stable.

Solderbro

[Thorgal789]

Hello, by curiosity, if you have buster and python 3.7 I presume ? Can you make a try with a python plugin and the lib requests ?
Just insert a

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import requests

At the top of a plugin. It seem domoticz is crashing in this situation.

[Solderbro]

Hello,

it looks like this but domoticz stay on schedule here

2019-08-03 07:51:21.936 Error: EventSystem: Failed to execute python event script "Test"
2019-08-03 07:51:21.936 Error: EventSystem: Traceback (most recent call last):
2019-08-03 07:51:21.936 Error: EventSystem: File "<string>", line 1, in <module>
2019-08-03 07:51:21.937 Error: EventSystem: ModuleNotFoundError: No module named 'requests'

I would suggest to downgrade python packages instead of using an older debian stable. Until domoticz parts are upgraded to work better with python 3.7

Solderbro

[Dnpwwo]

On a fresh buster (minimal) build running Python 3.7.3 the requests library import worked in Python and Domoticz.

Built from source as per instructions on the wiki.

Default version of Python for the OS (which I always recommend), requests was already installed according to pip3

[Thorgal789]

@Solderbro, Can you try

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pip3 install requests

To install the missing lib. And yes it's that he have do, he is still on buster but python 3.5 now, but for me it's not a good solution, python 3.7 ill be soon a new standard.

@Dnpwwo, so on your side, if you make a complete build it works ? You haven't make a try with a normal install ?

[Solderbro]

Yes the phyton-pip package was missing, it pulled 32MB of further packages that are installed now.

The result is

2019-08-03 15:16:22.055 Error: EventSystem: Failed to execute python event script "Test2"
2019-08-03 15:16:22.056 Error: EventSystem: File "<string>", line 1
2019-08-03 15:16:22.056 Error: EventSystem: pip3 install requests
2019-08-03 15:16:22.056 Error: EventSystem: ^
2019-08-03 15:16:22.056 Error: EventSystem: SyntaxError: invalid syntax

Solderbro

[Thorgal789]

"pip3 install requests" is to install the lib, just type in on the console/terminal, on the python file it's still "import requests".

[Solderbro]

Some packages did miss, so i installed both sides

domoticz@domosys:~/domoticz/www/styles $ pip --version
pip 18.1 from /usr/lib/python2.7/dist-packages/pip (python 2.7)
domoticz@domosys:~/domoticz/www/styles $ pip3 --version
pip 18.1 from /usr/lib/python3/dist-packages/pip (python 3.7)

pip3 requests in now installed too, i see that there is lot of stuff to install by hand if for example the SD Card wears out.

domoticz@domosys:~/domoticz/www/styles $ pip3 install requests
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Requirement already satisfied: requests in /usr/lib/python3/dist-packages (2.21.0)

But back to the first test script

2019-08-04 17:52:09.342 Error: EventSystem: Failed to execute python event script "Test"
2019-08-04 17:52:09.342 Error: EventSystem: Traceback (most recent call last):
2019-08-04 17:52:09.342 Error: EventSystem: File "<string>", line 1, in <module>
2019-08-04 17:52:09.342 Error: EventSystem: ModuleNotFoundError: No module named 'requests'

Incompatible in some way:-/

[Thorgal789]

From my memory, there was same bug before the last stable (need to add something like sys.path.insert(0,'/usr/local/lib/pythonX.X/dist-packages/') to code), but with all version after this one, the import is now working alone.

It's not the same problem but BTW thx a lot for yours tests ^^.

[Dnpwwo]

@Solderbro,

Python packages with pip3 need to be installed using 'sudo' (i.e 'sudo pip3 install requests')

[Thorgal789]

Arf, I haven't see, my fault.

This night I will make a try on windows, and I have an old raspberry 2, just need to find another sd card to test.

Edit 1:
Works perfectly by defaut on windows and pyton 3.7.4

[pipiche]

@Solderbro,

Python packages with pip3 need to be installed using 'sudo' (i.e 'sudo pip3 install requests')

Is that still valid , or can we install he Python packages on the local user running domoticz ?

[waltervl]

@Solderbro,

Python packages with pip3 need to be installed using 'sudo' (i.e 'sudo pip3 install requests')

Is that still valid , or can we install he Python packages on the local user running domoticz ?

It depends what user is running Domoticz service. From the default installation it seems to be user root (but I am not sure)