code: def url_fix(s, charset='utf-8'):
      r
      scheme, netloc, path, qs, anchor = url_parse(to_unicode(s, charset, 'replace'))
      path = url_quote(path, charset, safe='/%+$!*\'(),')
      qs = url_quote_plus(qs, charset, safe=':&%=+$!*\'(),')
      return to_native(url_unparse((scheme, netloc, path, qs, anchor)))
docs: r"""Sometimes you get an URL by a user that just isn't a real URL because
      it contains unsafe characters like ' ' and so on. This function can fix
      some of the problems in a similar way browsers handle data entered by the
      user:
  
      >>> url_fix(u'http://de.wikipedia.org/wiki/Elf (Begriffskl\xe4rung)')
      'http://de.wikipedia.org/wiki/Elf%20(Begriffskl%C3%A4rung)'
  
      :param s: the string with the URL to fix.
      :param charset: The target charset for the URL if the url was given as
                      unicode string.