Understanding the Writer run() method

The run() method is very straightforward. Based on whether recursion was specified, we call the specified writer, passing along the recursion keyword argument:

271         def run(self):
272             if self.recursion:
273                 self.writer(self.output, self.header, self.data,
274                     recursion=self.recursion)
275             else:
276                 self.writer(self.output, self.header, self.data)