Bug report

Bug description:

Hi,

I really feel puzzled by this behaviour:

>>> print(f'{True == True=}')
True == True=True
>>> print(f'{True != True=}')
True False

I expected that the output of print(f'{True != True=}') would be True != True=False.

According to docs, "[t]o display both the expression text and its value after evaluation, (useful in debugging), an equal sign '=' may be added after the expression". So print(f'{True != True=}') fails because the expression text is not fully displayed -- even "=" is omitted.

Sorry if this is a duplicate -- I was not able to find any other report here and in Cython issue tracker.

Thank you.

CPython versions tested on:

3.12, 3.13

Operating systems tested on:

macOS

Linked PRs

• gh-129093: Fix f-string debug text sometimes getting cut off when expression contains ! #129159
• [3.13] gh-129093: Fix f-string debug text sometimes getting cut off when expression contains ! (GH-129159) #129163
• [3.12] gh-129093: Fix f-string debug text sometimes getting cut off when expression contains ! #129164