from django.shortcuts import render
import datetime
# Create your views here.
# Мои настройки по температуре
#####################################
from django.core.files import File
f = open('/tmp/temperature/temperature.txt', 'r')
my_temper_garaj = f.read()
f.close()
#####################################

def my_list(request):
    now = datetime.datetime.now()
    my_time_new = now.strftime("%H:%M")
    my_date_new = now.strftime("%d-%m-%Y")
    #my_temper_garaj = 10      #старое статическое значение температуры
    my_temper_ulica = 11
    my_temper_dom = 12
    return render(request, 'main/index.html', context={'my_time': my_time_new, 'my_date': my_date_new, 'temper_garaj': my_temper_garaj, 'temper_ulica': my_temper_ulica, 'temper_dom': my_temper_dom})

<p>

  <ul class="list-group">
    <li class="list-group-item">
      <span class="badge">{{ temper_garaj }}</span>
        Гараж
    </li>
  </ul>


</p>