render_to_string快捷函数，渲染模板字符串

# views.py
from django.template.loader import render_to_string
from django.http import HttpResponse
def index(request):
  template_str =render_to_string(
    'email.html',
    context=job_info
  )
  return HttpReponse(template_str )

# email.html
Job:[{{job_id}}] {{job_name}} {{status}}