Generic Django plot view for matplotlib plot rendering and serving

plotview.py

from django.views import View
from django.http import HttpResponse

MIMETYPES = {
    'ps': 'application/postscript',
    'eps': 'application/postscript',
    'pdf': 'application/pdf',
    'svg': 'image/svg+xml',
    'png': 'image/png',
    'jpeg': 'image/jpeg',
    'tif': 'image/tiff',
    'emf': 'application/emf'
}


class PlotView(View):
    def get(self, request):
        image_format = request.GET.get('fmt', 'svg')
        fig = self.get_figure(request)
        out = HttpResponse(content_type=MIMETYPES[image_format])
        fig.savefig(out, format=image_format)
        fig.clear()
        return out

    def get_figure(self, request):
        raise NotImplementedError()