circuitpython/tests/cpydiff/core_fstring_concat.py
Jim Mussared e99f7b6d25 tests/cpydiff: Clarify f-string diffs regarding concatenation.
Concatenation of any literals (including f-strings) should be avoided.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2021-11-25 22:09:59 +11:00

14 lines
452 B
Python

"""
categories: Core
description: f-strings don't support concatenation with adjacent literals if the adjacent literals contain braces or are f-strings
cause: MicroPython is optimised for code space.
workaround: Use the + operator between literal strings when either or both are f-strings
"""
x, y = 1, 2
print("aa" f"{x}") # works
print(f"{x}" "ab") # works
print("a{}a" f"{x}") # fails
print(f"{x}" "a{}b") # fails
print(f"{x}" f"{y}") # fails