Problems with named unicode in combination with Fstrings

[xmatthias]

Environment data

• Language Server version: 2020.7.3
• OS and version: linux
• Python version (& distribution if applicable, e.g. Anaconda): python 3.8.2

Expected behaviour

No error, since the syntax is valid and prints the Greek SUM letter correctly
(200 Σ).

Not having this in an fstring results in no error - so i guess the fstring { detection ignores the leading \N.

Actual behaviour

Pylance shows error "Unexpected token at end of expression" for fstring

Code Snippet / Additional information

hello = 200
# The following line shows both GREEK and CAPITAL as error
print(f"({hello} \N{GREEK CAPITAL LETTER SIGMA})")

print("\N{GREEK CAPITAL LETTER SIGMA})")

[erictraut]

Thanks for the bug report. There was a bug in unicode name parsing related to capital letters. A fix will be in the next version of Pylance. While you're waiting for the fix, you can work around the issue by using lower-case characters ("greek capital letter sigma").

[jakebailey]

This issue has been fixed in version 2020.7.4, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/master/CHANGELOG.md#202074-29-july-2020

[xmatthias]

Great, thanks! 👍

can confirm that the issue is gone with this release