Python3.7 not able to identified.

[mamin27]

I tested code at Ubuntu 19.04 with Python 3.7 and library

/usr/lib/x86_64-linux-gnu/libpython3.7m.so

I changed PythonEngine.pas file to

{$IFDEF _so_files}
  PYTHON_KNOWN_VERSIONS: array[1..8] of TPythonVersionProp =
    (
    (DllName: 'libpython2.7.so'; RegVersion: '2.7'; APIVersion: 1013),
    (DllName: 'libpython3.2.so'; RegVersion: '3.2'; APIVersion: 1013),
    (DllName: 'libpython3.3.so'; RegVersion: '3.3'; APIVersion: 1013),
    (DllName: 'libpython3.4.so'; RegVersion: '3.4'; APIVersion: 1013),
    (DllName: 'libpython3.5.so'; RegVersion: '3.5'; APIVersion: 1013),
    (DllName: 'libpython3.6.so'; RegVersion: '3.6'; APIVersion: 1013),
    (DllName: 'libpython3.7m.so'; RegVersion: '3.7'; APIVersion: 1013),
    (DllName: 'libpython3.8.so'; RegVersion: '3.8'; APIVersion: 1013)
    ); 

Then the python3.7 was recognized but at least not correctly initialized.
at line 3057

      // set the argv list of the sys module with the application arguments
      PySys_SetArgv3000( argc + 1, wargv );

With error message:

Project Project1 raised exception class 'External: SIGABRT'.
In file '../sysdeps/unix/sysv/linux/raise.c' at line 50

Currently is recognized only Python 2.7.
Maybe you will know how to fix it.

[pyscripter]

@Alexey-T
Any idea what is going on?

[Alexey-T]

I use Linux with Py 36 and 37, all ok.
I don't use autodetection by lib name.
Seems asker uses some cmd line params in his demo and Py reads it.

[pyscripter]

@Alexey-T
What is the difference between libpython3.7m.so and libpython3.7.so?

[Alexey-T]

none, these are just some names - different linuxes use different names.

[Alexey-T]

In CudaText I have

{
  "font_name__linux" : "DejaVu Sans Mono",
  "font_size__linux" : 9,
  "ui_tab_angle" : 3,
  "ui_listbox_fuzzy" : false,
  "pylib__linux" : "libpython3.7m.so.1.0",

[mamin27]

Hi Alex and Pyscripter,
I prepared Demo02 - Demo06 (https://github.com/mamin27/Python-for-Lazarus/tree/master/demo_delphi/FPC) at https://github.com/mamin27/Python-for-Lazarus (Alex clone). Most of them were correctly tested. I would like to merge Alex an Pyscripter code but is is so different.
It will be better to merge your skills into one project. Delphi and FPC (Lazarus).

[Alexey-T]

@mamin27 I will merge your demo2..demo6 into my repo. Just delete programs "project1" (file size 20M)

[pyscripter]

Ok I got it. https://www.python.org/dev/peps/pep-3149/.

[mamin27]

Hi pyscripter, I did not understood your link.
library looks like this:

omet@comet-ThinkPad-L540:~/project/lazarus/Python-for-Lazarus$ ls -l /usr/lib/x86_64-linux-gnu/libpython3.7*
lrwxrwxrwx 1 root root      57 Oct  7 14:56 /usr/lib/x86_64-linux-gnu/libpython3.7m.a -> ../python3.7/config-3.7m-x86_64-linux-gnu/libpython3.7m.a
lrwxrwxrwx 1 root root      18 Oct  7 14:56 /usr/lib/x86_64-linux-gnu/libpython3.7m.so -> libpython3.7m.so.1
lrwxrwxrwx 1 root root      20 Nov 30 15:28 /usr/lib/x86_64-linux-gnu/libpython3.7m.so.1 -> libpython3.7m.so.1.0
-rw-r--r-- 1 root root 5080176 Oct  7 14:56 /usr/lib/x86_64-linux-gnu/libpython3.7m.so.1.0

[pyscripter]

@mamin27 This PEP says that library files are marked with m if they are compiled with PyMemAloc which is the default. Apparently this only applies to non-Window distributions.

[pyscripter]

@mamin27
Could you please check the latest version. There was an issue with SetProgramArgs and Linux UCS4 strings.

[pyscripter]

@Alexey-T
Could you please try on Linux with your version of P4Lazarus

import sys
print(sys.argv)

I think is should show garbage. Then can you please check my fix?

[Alexey-T]

On Linux CudaText console panel shows that sys.argv is [] (even when app has command line pars)

[pyscripter]

Ah! Because of:

 Exit; //AT: code hangs on Linux x64
        //////////////////////////////

Could you please test my fix?