Python: Fun Function Facts

Doublepicebs — Sat, 04 Jul 2020 23:50:21 +0000

(Assuming that) we all know what a python function is; I want to show some hacks that might help you.

(1) Optional parameters

def hi(name, age=18):
  print(f"Hi {name} who is {age} years old!")

Here, when calling this function, you don't have to give a value to the age parameter, as it will default to 18. However giving a value to age will override the default value.

hi("Mahdi")
# >>> Hi Mahdi who is 18 years old!
hi("Magdi", 25)
# >>> Hi Magdi who is 25 years old!

Note: optional arguments/parameters must come at the end, so this won't work:

def hi(age=14, name):
  print(f"Hi {name} who is {age} years old!")

hi(15, "Mohamed")

# >>> Syntax Error: non-default argument follows default argument

It's a good practice to let the default values None.

(2) You can write parameters in a different order

Take a look at this function:

def salut(fromPerson, toPerson):
  print(f"Hi from {fromPerson} to {toPerson}")

salut("Magdi", "Shady")
# >>> Hi from Magdi to Shady

This is also valid:

salut(toPerson="Shady", fromPerson="Magdi")
# >>> Hi from Magdi to Shady

It prints the same result as before. This feature is kinda cool, and it improves readability; even if you still write them in order.

Ok, that's good for now. Hope I helped you know something new, or clarified it. See you soon!

Hi!

Doublepicebs — Fri, 03 Jul 2020 23:27:31 +0000

This is my first post, as you see. Hopefully this is going to be my code-related blog-like place. My posts would be about Python and HTML/CSS/JS (for beginner/intermediate levels).
Posts would be in Arabic (as I hope more people of my friends, e.t.c learn to code) and English.
See you soon!

console.log("See ya!");

Forem: Doublepicebs

Python: Fun Function Facts

(1) Optional parameters

(2) You can write parameters in a different order

Hi!