invalid_import:

| a='import' ','.dotted_name+ 'from' dotted_name {

RAISE_SYNTAX_ERROR_STARTING_FROM(a, "Did you mean to use 'from ... import ...' instead?") }

| 'import' token=NEWLINE {

RAISE_SYNTAX_ERROR_STARTING_FROM(token, "Expected one or more names after 'import'") }

invalid_import_from_targets:

| import_from_as_names ',' NEWLINE {

RAISE_SYNTAX_ERROR("trailing comma not allowed without surrounding parentheses") }

| token=NEWLINE {

RAISE_SYNTAX_ERROR_STARTING_FROM(token, "Expected one or more names after 'import'") }

invalid_compound_stmt:

| a='elif' named_expression ':' { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "'elif' must match an if-statement here") }

Improve:exc:`SyntaxError` message for imports without names, like in

``from x import`` and ``import`` cases. It now points

out to users that:keyword:`import` expects at least one name after it.