Upgrade to Django 3

.gitignore

@@ -1,5 +1,5 @@
 *.pyc
-/pyscada_gpio.egg-info/*
+/pyscada_*.egg-info/*
 /.idea/*
 /dist/*
 /build/*

pyscada/gpio/__init__.py

@@ -3,7 +3,7 @@
 
 import pyscada
 
-__version__ = '0.7.0rc18'
+__version__ = '0.7.1rc1'
 __author__ = 'Martin Schröder'
 
 default_app_config = 'pyscada.gpio.apps.PyScadaGPIOConfig'

pyscada/gpio/apps.py

@@ -10,6 +10,7 @@ class PyScadaGPIOConfig(AppConfig):
     name = 'pyscada.gpio'
     verbose_name = _("PyScada GPIO")
     path = os.path.dirname(os.path.realpath(__file__))
+    default_auto_field = 'django.db.models.AutoField'
 
     def ready(self):
         import pyscada.gpio.signals

pyscada/gpio/models.py

@@ -6,13 +6,11 @@
 from pyscada.models import Variable
 
 from django.db import models
-from django.utils.encoding import python_2_unicode_compatible
 import logging
 
 logger = logging.getLogger(__name__)
 
 
-@python_2_unicode_compatible
 class GPIODevice(models.Model):
     gpio_device = models.OneToOneField(Device, null=True, blank=True, on_delete=models.CASCADE)
     board_choices = (('rpi', 'Raspberry Pi'),)
@@ -30,7 +28,6 @@ def __str__(self):
         return self.gpio_device.short_name
 
 
-@python_2_unicode_compatible
 class GPIOVariable(models.Model):
     gpio_variable = models.OneToOneField(Variable, null=True, blank=True, on_delete=models.CASCADE)
     gpio_mode_choices = (

setup.py

@@ -31,7 +31,7 @@
     platforms=['OS Independent'],
     classifiers=CLASSIFIERS,
     install_requires=[
-        'pyscada>=0.7.0rc18',
+        'pyscada>=0.7.1rc1',
         'rpi.gpio',
     ],
     packages=find_packages(exclude=["project", "project.*"]),