parameters: (self, msg, lineno)
docstring: Fail with a :exc:`TemplateAssertionError`.
docstring_summary: Fail with a :exc:`TemplateAssertionError`.
docstring_tokens: Fail with a : exc : TemplateAssertionError .
function: def fail(self, msg, lineno):
          """Fail with a :exc:`TemplateAssertionError`."""
          raise TemplateAssertionError(msg, lineno, self.name, self.filename)
function_tokens: def fail ( self , msg , lineno ) : raise TemplateAssertionError ( msg , lineno , self . name , self . filename )