Python Functions

If we add a string in a function using triple quotes (Docstring) then we can access this string by calling function_name.__doc__

Anonymous Functions (Lambda Function)

An lambda function is similar to a normal function except it is confined to one line and does not have a name

# Lambda can be assigned to a variable as well but it shouldn't be used
new_sum = lambda x,y: x + y
new_sum(1, 3)

Arguments (*args) & Keyword Arguments (**kwargs)

If we need to pass a varying amount of arguments to a function then instead of creating a function for each of them we can make use of *args and **kwargs

def my_addition_function(*args):
    return sum(args)
 
def my_fruit_function(**kwargs):
    if 'fruit' in kwargs:
        print(f"My favorite fruit is {kwargs['fruit']}")
    else:
        print("I don't like fruit")
 
my_addition_function(40,60,20) # 60
my_fruit_function(fruit='pineapple') # My favorite fruit is pineapple

Lambda Functions with Practical Examples in Python | by Susan Maina