RustPython / RustPython/Parser

Using strings inside f-string

Open
#125 3 comments 3 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Rust
Stars
117
Forks
38
Avg merge
4d 7h
Merged PRs (30d)
1

Description

From: https://github.com/mtshiba/pylyzer/issues/115

Starting with Python 3.12, the use of strings within f-strings is permitted.

Reference

However, the current parser implementation does not seem to allow the use of same quoting type strings within f-strings.

f"{"hello"}"

results in the following parsing error:

invalid syntax. Got unexpected token 'hello' at row 1 col 5

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No parser files or tests are named. Start by reproducing the shown f-string example and tracing the parser's handling of replacement fields and nested strings. Done means the same-quoting example parses successfully under Python 3.12 syntax rules without regressing existing f-string parsing.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, rust
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.