def get_source(self, environment, template):
    try:
      prefix, name = template.split(self.delimiter, 1)
      # logging.info("Trying => %s %s" % (prefix, name))
      loader = self.mapping[prefix]
    except (ValueError, __HOLE__):
      raise jinja2.TemplateNotFound(template)
    try:
      return loader.get_source(environment, name)
    except jinja2.TemplateNotFound:
      # re-raise the exception with the correct fileame here.
      # (the one that includes the prefix)
      raise jinja2.TemplateNotFound(template)
dataset/ETHPy150Open nikcub/floyd/floyd/templating/jinja.py/SubdirLoader.get_source