Unable to use the value in a dictionary in one Django view in another Django view (AttributeError: module 'urllib.request' has no attribute 'session')

Question

I am new to using Django. I have a function in views.py that computes the profit and prints it to a webpage in Django. I store the profit in a dictionary by the name of context and then store it in a session:

#We want to calculate hourly profit  
def profitmanagement(request):
    #Profit has already been computed
    context={'TotalHourlyProfit':TotalProfit} 
    #We will pass this dictionary to our ProfitManagement.html template. This will display our total profit.
    request.session['context'] = context #Save the dictionary using a session to use in another function
    return render(request,"ProfitManagement.html",context)

Now I have another function in views.py that will be triggered every hour using APScheduler. It should set the TotalHourlyProfit to zero, and then output it to the webpage. It is as given below:

#Sets the hourly profit to zero at each hour 
def ClearHourlyProfit():
       context = request.session.get('context') #Loads the dictionary computed in profitmanagement().  This is returning an error
       context['TotalHourlyProfit']=0 #Set the hourly profit to zero.
       #print("Hourly profit function has context:",context)
       return render(request,"ProfitManagement.html",context)

It returns the error: AttributeError: module 'urllib.request' has no attribute 'session'

Is there a way by which I can pass the changed value of TotalHourlyProfit to my webpage? I will be very grateful to anyone who can point me in the right direction.

Edit:

Upon request, I am including the traceback error before request is passed as a parameter and after request is passed as a parameter:

Before request:

Job "ClearHourlyProfit (trigger: interval[0:00:10], next run at: 2023-02-04 13:58:07 PKT)" raised an exception
Traceback (most recent call last):
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\apscheduler\executors\base.py", line 125, in run_job
    retval = job.func(*job.args, **job.kwargs)
  File "C:\Users\taimo\Documents\Visual Studio Code Workloads\Eziline Project\web_project\POS\views.py", line 93, in ClearHourlyProfit
    context = request.session.get('context') #Loads the dictionary computed in profitmanagement().  This is returning an error
AttributeError: module 'urllib.request' has no attribute 'session'

After request:

Traceback (most recent call last):
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\threading.py", line 1016, in _bootstrap_inner
    self.run()
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\threading.py", line 953, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\core\management\commands\runserver.py", line 125, in inner_run
    autoreload.raise_last_exception()
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\utils\autoreload.py", line 87, in raise_last_exception
    raise _exception[1]
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\core\management\__init__.py", line 398, in execute
    autoreload.check_errors(django.setup)()
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\django\apps\registry.py", line 124, in populate
    app_config.ready()
  File "C:\Users\taimo\Documents\Visual Studio Code Workloads\Eziline Project\web_project\POS\apps.py", line 9, in ready
    scheduler.start()
  File "C:\Users\taimo\Documents\Visual Studio Code Workloads\Eziline Project\web_project\scheduler\scheduler.py", line 13, in start
    scheduler.add_job(func=views.ClearHourlyProfit, trigger='interval', seconds=10) #Running this function every hour.
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\apscheduler\schedulers\base.py", line 438, in add_job
    job = Job(self, **job_kwargs)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\apscheduler\job.py", line 49, in __init__
    self._modify(id=id or uuid4().hex, **kwargs)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\apscheduler\job.py", line 180, in _modify
    check_callable_args(func, args, kwargs)
  File "C:\Users\taimo\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\apscheduler\util.py", line 391, in check_callable_args
    raise ValueError('The following arguments have not been supplied: %s' %
ValueError: The following arguments have not been supplied: request

Answer 1

You need to pass request as an argument in ClearHourlyProfit() function as well since it is a view function and also use {} empty dict if context does not exist so:

def ClearHourlyProfit(request):
    context = request.session.get('context', {})
    context['TotalHourlyProfit']=0
    request.session['context'] = context
    return render(request,"ProfitManagement.html",context)