return is a statement that determines a value the function will move outside of it, before ending the function execution. By default all functions return None, but that's not very useful. The simplest example I can think of is a function that adds two numbers together, and returns the sum. def add(first, second): return first + second total = add(3, 4) print(total) # 7

Explain Return Statement in PythonA return statement signals the end of a function's execution, sending back the result (the value of the expression following the return keyword) to the caller. Anything after the return statement won't be executed. When a return statement lacks an expression, it returns the special value None. Ultimately, a return statement is how a function is activated, allowing the execution of the provided statements.Note: Return statements are only used inside functions.Syntax:def tmp():    statement  return Here, I've given you an example in which the return statement performs an operation and returns a value.Example:# Python program to demonstrate return statementdef add(x, y):# returning sum of x and y return x + ydef is_true(x):# returning boolean of x return bool(x)# calling the functiontmp = add(2, 3)print(f"Result of add function is {tmp}")tmp = is_true(2<5)print(f"\nResult of is_true function is {tmp}")Output:Here I gave you another example of which you can return multiple values using the object.Example:# A Python program to return multiple values from a method using class class tmp:  def __init__(self):  self.str = "AccuCloud" self.val = 20# This function returns an object of tmp def func():  return tmp()# creating object of the func() a = func() print(a.str) print(a.val)Output:You can also return value using a tuple. A Tuple consists of items separated by commas and can be created both with or without parentheses. Tuples, once created, cannot be changed (they are immutable).Example:# A Python program to return multiple values from a method using tuple def tmp():  stri = "Accu Cloud" a = 20 return str, a; # Returning tuple# Driver code to test above method stri, x = tmp() print(stri) print(x)Output:You can also return value using the list. A list, formed with square brackets, resembles an array and holds various items. Unlike arrays, lists can accommodate items of diverse types. They differ from tuples in that they can be mutable after creation.Example:# A Python program to return multiple values from a method using listdef tmp():stri = "Accu Cloud"a = 10return ;list1 = tmp()print(list1)Output:You can also return the dictionary. A Dictionary shares similarities with hashes or maps found in other programming languages.Example:# A Python program to return multiple values from a method using dictionarydef tmp():  a = dict();  a = "Accu Cloud" a = 10 return a a = tmp() print(a)Output:Here I have given you an example of which functions are like objects, so we can send back a function from another function. This works because, in Python, functions are treated as super flexible objects.Example:def fun1(a): def adder(b): return a + b return adderadding = fun1(15)print("The result is", adding(20))def tmp(x): return x * 10def my_func1(): return tmpres = my_func1()print("Result is:", res(20))Output:Conclusion:The return statement in Python helps us send back values from functions to the place they were called. It's like handing over a package of information before the function finishes its job.

A return is used when you want to stop a function from executing further. The first one is necessary in order to not have the statements after the if self.head is None block be executed. The second one is unnecessary, as it's at the end of the function, so the function will return regardless. It's just a more explicit way of saying "I am returning here, but am not returning anything". That's the default behavior of any function that you don't explicitly put a return into.

It's very common in programming languages to have explicit, blank returns. For instance in C, any function whose return type is void has to have any returns be empty. In Python there's tons of built-in functions that don't need to return anything, let alone all the custom ones one might create. For instance, list.append() returns None; which is what any function in Python returns by default when there's not anything explicitly being returned.