Fstrings explained by sanest python teacher

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a comprehensive guide to f-strings in python

hello, and welcome to this tutorial on f-strings! if you’ve been coding in python, you might have heard about f-strings, which are a powerful and efficient way to format strings. let's dive in!

what are f-strings?

f-strings, or formatted string literals, were introduced in python 3.6. they allow you to embed expressions inside string literals, using curly braces `{}`. this makes it easy to build strings that include variable values or the results of expressions.

basic syntax

to create an f-string, simply prefix your string with the letter `f` or `f`. here’s the basic syntax:



explanation:

**prefix**: the `f` before the string tells python that this is an f-string.
**curly braces**: any variable or expression inside the curly braces will be evaluated at runtime and replaced with its value.

multiple variables

you can include multiple variables in an f-string:



expressions in f-strings

you can also include expressions directly in the f-string:



formatting numbers

f-strings also allow for formatting numbers, such as specifying the number of decimal places:



explanation of formatting:

the `.2f` means that you want to format the number as a floating-point number with two decimal places.

using functions

you can call functions within f-strings as well:



escaping curly braces

if you need to include literal curly braces in your f-string, you can escape them by doubling them:



multiline f-strings

you can also create multiline f-strings using triple quotes:



summary

f-strings are a concise and efficient way to embed expressions inside string literals in python. they enhance readability and reduce the likelihood of errors compared to older string formatting methods like `%` formatting or `str.format()`.

key points:
use the `f` prefix to create f-strings.
embed variables and expressions using `{}`.
format numbers and other types directly within the f-st ...

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