@property
def github_url(self):
    url = 'https://github.com/pandas-dev/pandas/blob/master/'
    url += '{}#L{}'.format(self.source_file_name, self.source_file_def_line)
    return url
@property
def github_url(self):
    url = 'https://github.com/pandas-dev/pandas/blob/master/'
    url += '{}#L{}'.format(self.source_file_name, self.source_file_def_line)
    return url