PEP 498

lastmod 2022-11-25created 2022-11-253 edits

Literal String Interpolation (the f"..." thing)

!s, !r, and !a are redundant

• !r - calls repr
• !s - calls str
• !a - calls ascii

Example

>>> a = 'some string'
>>> f'{a!r}'
"'some string'"

Is identical to:

>>> f'{repr(a)}'
"'some string'"

See also

• python

Favorite site

• PEP 498 – Literal String Interpolation | peps.python.org