Suggestion for download() function

[killown]

Do something like that for download() function

def download(self, url):
     url_list = url
     if type(url) == str:
         url_list = [url]
    """Download a given list of URLs."""
    outtmpl = self.params.get('outtmpl', DEFAULT_OUTTMPL)
    if (len(url_list) > 1 and
            outtmpl != '-' and
            '%' not in outtmpl and
            self.params.get('max_downloads') != 1):

[dstftw]

Don't see much point in that. Doc string is clear about what type of argument you should pass.