5 Useful F-String Tricks In Python

the "=" trick in the f-string is fire.

Ever since I learned f-strings...I love them.

I've been using python for about 10 years, and f strings extensively, but never knew that last tip! Game changer!

About the fourth trick: the f in ".2f" tells it to format as float. You can also do for example ".2e"" which will format the number in scientific format.

This is the first time I have seen someone specify datatype for variables in python, and I honestly loved it. Great tips btw.

The last one is super duper cool!

Very nice. Another useful is formatting float as percent: f"{foo:.2%}".

Didn't know about the date/time and equals formatting. Looks like the first one forwards to strftime. Makes things so much more concise and readable.

This kind of tips are awesone. We need more 👍

Great video! I missed the bonus tip where you explain that format string calls _format_ on the object being formatted, so you can do your own formatting, like this: class MyData: def __init__(self, a: int, b: int, c: int): self.a = a self.b = b self.c = c def __format__(self, spec): if spec[0] not in self.__dict__: sep = spec[0] l = list(spec[1:]) else: sep = ',' l = list(spec) return sep.join(str(self.__dict__[key]) for key in l) my_var = MyData(a=1, b=2, c=3) assert f"{my_var:cba}" == "3,2,1" assert f"{my_var:-abc}" == "1-2-3"

Great video! Didn't know about the datetime and debug print ones. Definitely going to use them in the future, though.

Thank you for the instructive tips!

i love f strings also this is like the 3rd time i come across the = specifier but i keep forgetting its existence and type in the whole thing

This is amazing!! thank you for this tutorial!!

Absolutely fantastic and useful video!

Nice collection! 💯

"Simple y bello como un anillo", como diría Neruda; pero además, muy funcional. ¡Muchas gracias!

F strings are soo chef kiss

Love #5. Thank you.

Wow, so many simple things I didn't about... Thank you