🐍 Python Basics 5/6: Functions and Lambdas

date

Mar 30, 2023

slug

python-basics-functions-and-lambdas

status

Published

0) Functions

Well, as far as my goal here is to show how to create functions and not to explain what are and why to use them, let's get straight to the code!

#
# ---- Functions ----
#
def my_function_without_params(): print("Hello World!")
def my_function_with_param(name): print(f"Hello World {name}!")
def my_function_with_unlimited_params(*names): print(f"Hello World {names}!")
def my_function_with_unlimited_key_params(**key_names):
    for key in key_names:
        print(f"\n{key} - Hello World {key_names[key]}!")

my_function_without_params()
my_function_with_param("Felix")
my_function_with_unlimited_params("Felix", "Goku")
my_function_with_unlimited_key_params(one="Felix", two="Goku", three="Vegeta", four="Yuji Itadori")

1) Lambdas

Like array functions in modern JavaScript, lambda functions are a easier way to write simple functions in Python.

#
# ---- Lambda Functions ----
#
my_lambda_function_without_params = lambda: print("Hello World!")
my_lambda_function_with_param = lambda name: print(f"Hello World {name}!")
my_lambda_function_with_unlimited_params = lambda *names: print(f"Hello World {names}!")
my_lambda_function_with_unlimited_key_params = lambda **key_names: print(f"Hello World {key_names}!")

my_lambda_function_without_params()
my_lambda_function_with_param('Felix')
my_lambda_function_with_unlimited_params('Felix', 'Goku')
my_lambda_function_with_unlimited_key_params(one='Felix', two='Goku', three='Vegeta', four='Yuji Itadori')

Not so hard, is it?

In the next post we will cover some tricks and bonuses in Python. See ya! 👋