from abc import abstractmethod

from django.core.management.base import BaseCommand


class TaskCommand(BaseCommand):
    def start_progress(self, *args, **options):
        # TODO: needs implementation
        pass

    def update_progress(self, *args, **options):
        # TODO: needs implementation
        pass

    @abstractmethod
    def handle_async(self, *args, **options):
        pass

from abc import abstractmethod
from collections import namedtuple

from django.core.management.base import BaseCommand
from django.core.management.base import CommandError

Progress = namedtuple(
    'Progress',
    [
        'progress',
        'total',
        'fraction',
    ]
)


class TaskCommand(BaseCommand):
    def handle(self, *args, **options):
        self.progresstracker = None
        return self.handle_async(*args, **options)

    def start_progress(self, total):
        self.progresstracker = Progress(progress=0, total=total, fraction=0)

    def update_progress(self, increment):
        tracker = self.progresstracker
        progress = tracker.progress + increment
        if progress > tracker.total:
            raise CommandError("Progress reaches over 100%.")

        fraction = 1.0 * progress / tracker.total
        updated_tracker = tracker._replace(progress=progress, fraction=fraction)
        self.progresstracker = updated_tracker

    @abstractmethod
    def handle_async(self, *args, **options):
        pass

Add a progress tracker to the async task command
Add a progress tracker to the async task command

  from abc import abstractmethod
+ from collections import namedtuple
  
  from django.core.management.base import BaseCommand
+ from django.core.management.base import CommandError
+ 
+ Progress = namedtuple(
+     'Progress',
+     [
+         'progress',
+         'total',
+         'fraction',
+     ]
+ )
  
  
  class TaskCommand(BaseCommand):
-     def start_progress(self, *args, **options):
+     def handle(self, *args, **options):
-         # TODO: needs implementation
-         pass
+         self.progresstracker = None
+         return self.handle_async(*args, **options)
  
+     def start_progress(self, total):
+         self.progresstracker = Progress(progress=0, total=total, fraction=0)
+ 
-     def update_progress(self, *args, **options):
+     def update_progress(self, increment):
-         # TODO: needs implementation
-         pass
+         tracker = self.progresstracker
+         progress = tracker.progress + increment
+         if progress > tracker.total:
+             raise CommandError("Progress reaches over 100%.")
+ 
+         fraction = 1.0 * progress / tracker.total
+         updated_tracker = tracker._replace(progress=progress, fraction=fraction)
+         self.progresstracker = updated_tracker
  
      @abstractmethod
      def handle_async(self, *args, **options):
          pass
  
Add a progress tracker to the async task command
## Code Before:
from abc import abstractmethod

from django.core.management.base import BaseCommand


class TaskCommand(BaseCommand):
    def start_progress(self, *args, **options):
        # TODO: needs implementation
        pass

    def update_progress(self, *args, **options):
        # TODO: needs implementation
        pass

    @abstractmethod
    def handle_async(self, *args, **options):
        pass

## Instruction:
Add a progress tracker to the async task command
## Code After:
from abc import abstractmethod
from collections import namedtuple

from django.core.management.base import BaseCommand
from django.core.management.base import CommandError

Progress = namedtuple(
    'Progress',
    [
        'progress',
        'total',
        'fraction',
    ]
)


class TaskCommand(BaseCommand):
    def handle(self, *args, **options):
        self.progresstracker = None
        return self.handle_async(*args, **options)

    def start_progress(self, total):
        self.progresstracker = Progress(progress=0, total=total, fraction=0)

    def update_progress(self, increment):
        tracker = self.progresstracker
        progress = tracker.progress + increment
        if progress > tracker.total:
            raise CommandError("Progress reaches over 100%.")

        fraction = 1.0 * progress / tracker.total
        updated_tracker = tracker._replace(progress=progress, fraction=fraction)
        self.progresstracker = updated_tracker

    @abstractmethod
    def handle_async(self, *args, **options):
        pass
