[docs] [issue28942] await expressions in f-strings

Adam Gregory report at bugs.python.org
Mon Dec 12 06:12:02 EST 2016

New submission from Adam Gregory:


I've been playing with f-strings, which seem like a great addition to the language. I noticed in the definition of f_expression that it can include any or_expr. As far as I understand, this includes "await" expressions, so I tried using await inside an f-string in a coroutine with CPython 3.6.0b4. This produces a SyntaxError.

Should await be allowed in f-strings? I don't know if this is a bug or a documentation issue. Personally, I think it would be an occasionally useful feature - more so than yield, at least, which does work.

Ref: https://docs.python.org/3.6/reference/lexical_analysis.html#formatted-string-literals

assignee: docs at python
components: Documentation, asyncio
messages: 282980
nosy: Adam Gregory, docs at python, gvanrossum, yselivanov
priority: normal
severity: normal
status: open
title: await expressions in f-strings
versions: Python 3.6

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