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DeprecationWarning when escaping curly braces in an f-string #105938

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lysnikolaou opened this issue Jun 20, 2023 · 0 comments
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DeprecationWarning when escaping curly braces in an f-string #105938

lysnikolaou opened this issue Jun 20, 2023 · 0 comments
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type-bug An unexpected behavior, bug, or error

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lysnikolaou commented Jun 20, 2023 •
edited by bedevere-bot
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Bug report

A DeprecationWarning is emitted when escaping a curly brace in an f-string. The correct warning is a SyntaxWarning as of Python 3.12.

cpython ontest-fstring-syntaxwarnings [$] via C v14.0.3-clang via 🐍 pyenv 3.11.3 took 15s 
❯ ./python.exe
Python 3.13.0a0 (heads/main:155577de1b, Jun 20 2023, 13:50:50) [Clang 14.0.3 (clang-1403.0.22.14.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> '\h'
<stdin>:1: SyntaxWarning: invalid escape sequence '\h'
'\\h'
>>> f'\h'
<stdin>:1: SyntaxWarning: invalid escape sequence '\h'
'\\h'
>>> '\{'
<stdin>:1: SyntaxWarning: invalid escape sequence '\{'
'\\{'
>>> f'\{{'
<stdin>:1: DeprecationWarning: invalid escape sequence '\{'
<stdin>:1: SyntaxWarning: invalid escape sequence '\{'
'\\{'

Linked PRs
@lysnikolaou lysnikolaou added the type-bug An unexpected behavior, bug, or error label Jun 20, 2023
@lysnikolaou lysnikolaou self-assigned this Jun 20, 2023
@lysnikolaou lysnikolaou mentioned this issue Jun 20, 2023
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@bedevere-bot bedevere-bot mentioned this issue Jun 20, 2023
Merged
lysnikolaou added a commit to lysnikolaou/cpython that referenced this issue Jun 20, 2023
@lysnikolaou
pythongh-105938: Emit a SyntaxWarning for escaped braces in an f-string
533252e
lysnikolaou added a commit to lysnikolaou/cpython that referenced this issue Jun 20, 2023
@lysnikolaou
pythongh-105938: Emit a SyntaxWarning for escaped braces in an f-string
e25dbb3
pablogsal pushed a commit that referenced this issue Jun 20, 2023
@lysnikolaou
gh-105938: Emit a SyntaxWarning for escaped braces in an f-string (#1…
6586cee 
…05939)
@bedevere-bot bedevere-bot mentioned this issue Jun 20, 2023
Merged
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Jun 20, 2023
@lysnikolaou @miss-islington
pythongh-105938: Emit a SyntaxWarning for escaped braces in an f-stri…
87056af 
…ng (pythonGH-105939)

(cherry picked from commit 6586cee)

Co-authored-by: Lysandros Nikolaou <[email protected]>
lysnikolaou added a commit that referenced this issue Jun 20, 2023
@miss-islington @lysnikolaou
[3.12] gh-105938: Emit a SyntaxWarning for escaped braces in an f-str…
fea0d2f 
…ing (GH-105939) (#105941)

(cherry picked from commit 6586cee)

Co-authored-by: Lysandros Nikolaou <[email protected]>
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