def list_url_unsafe_chars(name):
 reserved_chars = ''
 for i in name:
  if (i in URL_RESERVED_CHARS):
   reserved_chars += i
 return reserved_chars

def list_url_unsafe_chars ( name ) : reserved_chars = '' for i in name : if ( i in URL_RESERVED_CHARS ) : reserved_chars += i return reserved_chars
return a list of the reserved characters .