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🖥️ How to Return (Multiple) Values from a Function in Python?
The return statement in Python, is used to exit a function – and go back to the place from where it was called. This statement can contain an expression that gets evaluated, and the value is returned. If there is no expression in the statement or the return statement itself is not present inside a function, then the function will return the None object. Here, None is returned since hello() directly prints the name passed as argument – and no return statement is used.
def hello(name):
print(f'Hello, {name}!')
○ Return Single Value
To return a value from a function, simply use a return statement. Once a return statement is executed, nothing else in the function body will be executed. Remember: Python function always returns a value. Therefore, If you do not include any return statement, it automatically returns None. And, ALL variables declared in this function, will not be accessible outside the function (variable scope).
# Return sum of two values
def sum(a, b):
return a + b
x = sum(3, 4) # x = 7
○ Return Multiple Values
Python has the ability to return multiple values, something missing from many other languages. Fortunately for you, you can simply do this, by separating return values with a comma.
# Return addition and subtraction in a tuple
def func(a, b):
return a+b, a-b
result = func(3, 2) # result = (5, 1)
When you return multiple values, Python actually packs them into a single tuple, and returns it. Consequently, you can then use multiple assignment to unpack the parts of the returned tuple, into multiple variables. (See Tuple)
# Unpack returned tuple
def func(a, b):
return a+b, a-b
add, sub = func(3, 2)
print(add) # OUTPUT: 5
print(sub) # OUTPUT: 1
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How to Return (multiple) Value from a Function in Python?
