code: def describe_form(label, fields):
      
      try:
          app_name, model_name = label.split('.')[-2:]
      except (IndexError, ValueError):
          raise CommandError("Need application and model name in the form: appname.model")
      model = apps.get_model(app_name, model_name)
  
      opts = model._meta
      field_list = []
      for f in opts.fields + opts.many_to_many:
          if not f.editable:
              continue
          if fields and f.name not in fields:
              continue
          formfield = f.formfield()
          if '__dict__' not in dir(formfield):
              continue
          attrs = {}
          valid_fields = ['required', 'initial', 'max_length', 'min_length', 'max_value', 'min_value', 'max_digits', 'decimal_places', 'choices', 'help_text', 'label']
          for k, v in formfield.__dict__.items():
              if k in valid_fields and v is not None:
                  # ignore defaults, to minimize verbosity
                  if k == 'required' and v:
                      continue
                  if k == 'help_text' and not v:
                      continue
                  if k == 'widget':
                      attrs[k] = v.__class__
                  elif k in ['help_text', 'label']:
                      attrs[k] = str(force_text(v).strip())
                  else:
                      attrs[k] = v
  
          params = ', '.join(['%s=%r' % (k, v) for k, v in sorted(attrs.items())])
          field_list.append('    %(field_name)s = forms.%(field_type)s(%(params)s)' % {
              'field_name': f.name,
              'field_type': formfield.__class__.__name__,
              'params': params
          })
      return '''
  from django import forms
  from %(app_name)s.models import %(object_name)s
  
  class %(object_name)sForm(forms.Form):
  %(field_list)s
  ''' % {'app_name': app_name, 'object_name': opts.object_name, 'field_list': '\n'.join(field_list)}
docs: Return a string describing a form based on the model