diff options
Diffstat (limited to 'tests/basics/string_fstring.py')
| -rw-r--r-- | tests/basics/string_fstring.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/basics/string_fstring.py b/tests/basics/string_fstring.py index 8907a5c478..1a3960680e 100644 --- a/tests/basics/string_fstring.py +++ b/tests/basics/string_fstring.py @@ -61,3 +61,22 @@ except (ValueError, SyntaxError): print(f"a {1,} b") print(f"a {x,y,} b") print(f"a {x,1} b") + +# f-strings with conversion specifiers (only support !r and !s). +a = "123" +print(f"{a!r}") +print(f"{a!s}") +try: + eval('print(f"{a!x}")') +except (ValueError, SyntaxError): + # CPython detects this at compile time, MicroPython fails with ValueError + # when the str.format is executed. + print("ValueError") + +# Mixing conversion specifiers with formatting. +print(f"{a!r:8s}") +print(f"{a!s:8s}") + +# Still allow ! in expressions. +print(f"{'1' if a != '456' else '0'!r:8s}") +print(f"{'1' if a != '456' else '0'!s:8s}") |