how to solve django: UnboundLocalError

问题

I have the given view and template code, when i try to run this code i get the following errors.when i searched about this type of error,i found that it happens when a variable and function is given the same name,but could't correct it in my code.

 Environment:

 Request Method: GET
 Request URL: http://127.0.0.1:8000/budget/show/
 Django Version: 1.2.5
 Python Version: 2.7.1
 Installed Applications:
 ['django.contrib.admin',
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.sites',
  'django.contrib.messages',
  'mysite.bug']
  Installed Middleware:
  ('django.middleware.common.CommonMiddleware',
  'django.contrib.sessions.middleware.SessionMiddleware',
  'django.middleware.csrf.CsrfViewMiddleware',
  'django.contrib.auth.middleware.AuthenticationMiddleware',
   'django.contrib.messages.middleware.MessageMiddleware')


 Traceback:
    File "/usr/lib/pymodules/python2.7/django/core/handlers/base.py" in get_response 100.                     response = callback(request, *callback_args,   **callback_kwargs)
    File "/home/nimesh/budman/mysite/../mysite/bug/views.py" in shown 252.             
    return render_to_response('budgetfinalform3.html', {'account_number': c,'period':d,'month':e,'year':f,'formsetlist': formset,'child':child},context_instance=RequestContext(request))

     Exception Type: UnboundLocalError at /budget/show/
     Exception Value: local variable 'formset' referenced before assignment

plz help me to remove this error.

def show (request):
b = request.session["s1"]
c = request.session["s2"]
d = request.session["s3"]
a = account_period.objects.filter(year=d).values('id')
e = account_period.objects.filter(year=d).values('month')
f = account_period.objects.filter(id = a).values('year')

try:
        child = account_tab.objects.filter(parent_account_number=c).values('account_number')
        noofchild = account_tab.objects.filter(parent_account_number=c).count()
except account_tab.DoesNotExist:
        noofchild = 0
if noofchild != 0 :   
       formsetlist = []


       for i in range(0, noofchild):
        formsetlist.append(formset_factory(bu, extra=b))
    if request.method == 'POST':

     formsetlist2.append(formsetlist[i](request.POST))

     if formsetlist2[i].is_valid():
       j=0
       for form in formsetlist2[i].forms:
         z = account_tab.objects.get(account_number = child[i:(i+1)])
         x = form.cleaned_data['value']
         y = account_period.objects.get(id=a[j:(j+1)])
         try:
                uip = budget.objects.get(account_no = child[i:(i+1)],account_period = a[j:(j+1)])
                if uip.budget_amount != x:

                  uip.budget_amount = x
                  uip.save()

         except budget.DoesNotExist:

                w = budget(account_no = z, account_period = y, budget_amount = x, created_by_login = 'me')
                w.save()
         j=j+1
       pass
       return HttpResponse('thanks')


    else:
             return render_to_response('budgetfinalform3.html', {'account_number': c,'period':d,'month':e,'year':f,'formsetlist': formset,'child':child},context_instance=RequestContext(request))
     #return HttpResponse(mes)

Template code is

    <html>
    <head>
    <title>BUDGET</title>
    </head>
    <body>
    <h1>BUDGET MANAGEMENTS</h1>
    <h2>Your Account Number is : {{ account_number }}.</h2> <h2>You Chose {{ period }} {{month}} as period</h2>   

    {% if form.errors %}
    <p style="color: red;">
        Please correct the error{{ form.errors|pluralize }} below.
    </p>
    {% endif %}


    <form action="." method="post">{% csrf_token %}
    {% for formset in formsetlist %}
    {{ formset.management_form }}
    {{child}}

    <table>
    {% for form in formset.forms %}

    {% if forloop.counter == 0  %}
     {{child.1}}
    {% endif%}
    {{ form }}
    {% endfor %}
    </table>   
    {% endfor %}
    <input type="submit" value="Submit">
    </form>
    </body>
    </html>

回答1:

return render_to_response('budgetfinalform3.html', {'account_number': c,'period':d,'month':e,'year':f,'formsetlist': formset,'child':child},context_instance=RequestContext(request))

Uses formset but it looks/sounds like you meant formsetlist:

return render_to_response('budgetfinalform3.html', {'account_number': c,'period':d,'month':e,'year':f,'formsetlist': formsetlist,'child':child},context_instance=RequestContext(request))

来源：https://stackoverflow.com/questions/11343690/how-to-solve-django-unboundlocalerror

标签

django

view

django-views

formset