280     l = getlist(x)

   280     l = getlist(x)

   281     if len(l) < min or (max >= 0 and len(l) > max):

   281     if len(l) < min or (max >= 0 and len(l) > max):

   282         raise error.ParseError(err)

   282         raise error.ParseError(err)

   283     return l

   283     return l

   284 

   284 

   285 def isvalidsymbol(tree):

   289 def isvalidsymbol(tree):

   286     """Examine whether specified ``tree`` is valid ``symbol`` or not

   290     """Examine whether specified ``tree`` is valid ``symbol`` or not

   287     """

   291     """

   288     return tree[0] == 'symbol' and len(tree) > 1

   292     return tree[0] == 'symbol' and len(tree) > 1

   289 

   293