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| -rw-r--r-- | bot/resources/tags/strip-gotcha.md | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/bot/resources/tags/strip-gotcha.md b/bot/resources/tags/strip-gotcha.md new file mode 100644 index 000000000..9ad495cd2 --- /dev/null +++ b/bot/resources/tags/strip-gotcha.md @@ -0,0 +1,17 @@ +When working with `strip`, `lstrip`, or `rstrip`, you might think that this would be the case: +```py +>>> "Monty Python".rstrip(" Python") +"Monty" +``` +While this seems intuitive, it would actually result in: +```py +"M" +``` +as Python interprets the argument to these functions as a set of characters rather than a substring. + +If you want to remove a prefix/suffix from a string, `str.removeprefix` and `str.removesuffix` are recommended and were added in 3.9. +```py +>>> "Monty Python".removesuffix(" Python") +"Monty" +``` +See the documentation of [str.removeprefix](https://docs.python.org/3.10/library/stdtypes.html#str.removeprefix) and [str.removesuffix](https://docs.python.org/3.10/library/stdtypes.html#str.removesuffix) for more information. |