old_contents: from django import forms
  from django.forms.models import formset_factory, BaseModelFormSet
  from django.forms.widgets import NumberInput
  
  from .models import Reading
  
  class ReadingForm(forms.Form):
      ships_head = forms.FloatField(required=False, widget=NumberInput(attrs={'style': "width: 5em;"}))
      deviation  = forms.FloatField(required=False, widget=NumberInput(attrs={'style': "width: 5em;"}))
  
  ReadingFormSet = formset_factory(form=ReadingForm)
  
new_contents: from django import forms
  from django.forms.models import formset_factory, BaseModelFormSet
  from django.forms.widgets import NumberInput
  
  from .models import Reading
  
  class DegreeInput(NumberInput):
  
      """Set the default style"""
      def __init__(self, attrs=None):
          if attrs is None:
              attrs = {}
          attrs['style'] = "width: 5em;"
  
          super(DegreeInput, self).__init__(attrs)
  
      """Strip decimal points if not needed"""
      def _format_value(self, value):
          return u"%g" % value
  
  
  class ReadingForm(forms.Form):
      ships_head = forms.FloatField(
          required=False,
          widget=DegreeInput()
      )
  
      deviation = forms.FloatField(
          required=False,
          widget=DegreeInput()
      )
  
  ReadingFormSet = formset_factory(form=ReadingForm)
  
subject: Customize degree widget so that if formats floats more elegantly