python - Validate form A's data by usuing form B's data -

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so have these 2 forms. able access data in form env_form when checking add_urg other form. possible this? env form common form through out app keep separate instead of including on every form.

class env_form(forms.form):             env = forms.choicefield(choices=env, required=true)      class add_urg(forms.form):             user = forms.charfield(max_length=50)             group = forms.charfield(required=true)             role = forms.charfield(required=true)              def clean_user(self):                     post_user = self.cleaned_data['user']                     post_env = self.cleaned_data['env']                     c = user.objects.filter(user__contains=post_user, env__contains=post_env ).count()                     if (c == 0):                          raise forms.validationerror(u"user not found.")                     else:                          user_info = user.objects.filter(user__contains=post_user).values('password').distinct().count()                          user_env = user.objects.filter(user__contains=post_user).values('env').distinct().count()                          if not (user_env == user_info):                             raise forms.validationerror(u'user using same password')                     return(post_user)

if i'm reading question correctly, think form inheritance used here. 

class env_form(forms.form):     env = forms.choicefield(choices=env, required=true)  class add_urg(env_form):     user = forms.charfield(max_length=50)     group = forms.charfield(required=true)     role = forms.charfield(required=true)      def clean_user(self):         post_user = self.cleaned_data['user']         post_env = self.cleaned_data['env']         c = user.objects.filter(user__contains=post_user, env__contains=post_env ).count()         if (c == 0):             raise forms.validationerror(u"user not found.")         else:             user_info = user.objects.filter(user__contains=post_user).values('password').distinct().count()             user_env = user.objects.filter(user__contains=post_user).values('env').distinct().count()             if not (user_env == user_info):                 raise forms.validationerror(u'user using same password')         return(post_user)       def __init__(self, *args, **kwargs):         super(env_form, self).__init__(*args, **kwargs)  class someotherform(env_form):     some_field = forms.charfield()      def __init__(self,*args,**kwargs):         super(env_form, self).__init__(*args,**kwargs)

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