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| -rw-r--r-- | bot/resources/tags/f-strings.md | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/bot/resources/tags/f-strings.md b/bot/resources/tags/f-strings.md index 69bc82487..4f12640aa 100644 --- a/bot/resources/tags/f-strings.md +++ b/bot/resources/tags/f-strings.md @@ -1,17 +1,9 @@ -In Python, there are several ways to do string interpolation, including using `%s`\'s and by using the `+` operator to concatenate strings together. However, because some of these methods offer poor readability and require typecasting to prevent errors, you should for the most part be using a feature called format strings. +Creating a Python string with your variables using the `+` operator can be difficult to write and read. F-strings (*format-strings*) make it easy to insert values into a string. If you put an `f` in front of the first quote, you can then put Python expressions between curly braces in the string. -**In Python 3.6 or later, we can use f-strings like this:** ```py -snake = "Pythons" -print(f"{snake} are some of the largest snakes in the world") -``` -**In earlier versions of Python or in projects where backwards compatibility is very important, use str.format() like this:** -```py -snake = "Pythons" - -# With str.format() you can either use indexes -print("{0} are some of the largest snakes in the world".format(snake)) - -# Or keyword arguments -print("{family} are some of the largest snakes in the world".format(family=snake)) +>>> snake = "pythons" +>>> number = 21 +>>> f"There are {number * 2} {snake} on the plane." +"There are 42 pythons on the plane." ``` +Note that even when you include an expression that isn't a string, like `number * 2`, Python will handle converting it to a string. |