f-strings

Transcript

1. F-strings @mariatta

2. F-strings?

3. the new way to format strings

4. starting in Python 3.6

5. How?

6. How? "Hello, %s. You’re %s." % (name, age)

7. How? "Hello, {name}. You’re {age}.".format(name=name, age=age) "Hello, %s. You’re %s."

   % (name, age)

8. How? "Hello, {name}. You’re {age}.".format(name=name, age=age) f"Hello, {name}. You’re {age}."

   "Hello, %s. You’re %s." % (name, age)

9. Alternate usage

10. Alternate usage f"Hello, {name}. You’re {age}."

11. Alternate usage F"Hello, {name}. You’re {age}." f"Hello, {name}. You’re {age}."

12. Call a function >>> def to_uppercase(input): ... return input.upper() ...

    >>> name = “bart simpson” >>> print(f"Hi {to_uppercase(name)}!") Hi BART SIMPSON!

13. Format specifiers >>> pycascades = datetime(year=2018, month=1, day=22) >>> print(f"{pycascades:%b

    %d, %Y}") Jan 22, 2018

14. F-strings

15. Faster than str.format

16. Python 3.6

17. Free download www.python.org

18. Build from source https://docs.python.org/3.6/using/unix.html

19. Change your OS consider: MacOS X, Windows 10, fedora 26,

    ubuntu 17.10
20. None