Bug report

Bug description:

Trying to run the following code:

dummy_call(
    "dummy value"
    foo="bar",
)

results in a SyntaxError that looks like:

  File "...", line 2
    "dummy value"
    ^^^
SyntaxError: invalid syntax. Perhaps you forgot a comma?

On 3.13+, the first three characters are also highlighted in red. I would expect the end of the line (where the comma should be) to be marked, the foo=bar line, or possibly the entire line.

Interestingly, if you remove the indentation, then the error looks as expected:

  File "...", line 1
    dummy_call("dummy value" foo="bar",)
               ^^^^^^^^^^^^^^^^^
SyntaxError: invalid syntax. Perhaps you forgot a comma?

CPython versions tested on:

3.12, 3.13, CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-123123: Fix display of syntax errors covering multiple lines #123131
• [3.13] gh-123123: Fix display of syntax errors covering multiple lines (GH-123131) #123147