Empty AST nodes are confusingly represented with `(...)` (recursion depth stopper)

[johnslavik]

Bug report

Bug description:

import ast
print(repr(ast.parse("x")))

Current vs expected:

-Module(body=[Expr(value=Name(id='x', ctx=Load(...)))], type_ignores=[])
+Module(body=[Expr(value=Name(id='x', ctx=Load()))], type_ignores=[])

If a node is empty, let's avoid adding ... that could suggest that there's something redacted within the node.

Thanks @asottile for reporting internally. I didn't find a duplicate.

CPython versions tested on:

CPython main branch, 3.15, 3.14

Operating systems tested on:

No response

Linked PRs

• gh-156021: Don't include ... for empty AST node representations #156022