python function to generate pdf from url

I need a python function that recieve 2 parameters and generate a PDF from a url and a XML from url. prototype: def generate_pdf(RBR, path_to_download): #create url url = "[login to view URL]%s/" % RBR url_xml = "[login to view URL]%s/v1/xml/opentrials/" % RBR #TODO ''' generate pdf from url in english and in portugues to change manually the language we have to click on PT or EN at the top right of the screen this PT and EN link is a trigger for a javascript save generated PDFs at path_to_download save xml from url_xml at path_to_download '''