User defined functions in python

Function  that we define ourselves to perform a specific task  are called user defined functions .
These functions are created using def keyword , inside the function we write any statement with the indentation (4 spaces ) . The def keyword  , then function name and round brakets after that .

When we need to call our function we have to use function name with round brackets(). When we will call the function , statement of  function body will be executed . This will be not be executed untill we call that .

For exapmle:
def  animal():
    print “Hi  Guys welcome to the python world”
animal()

>> output would be :   Hi   Guys welcome to the python world

Advantages of user defined functions

1.  User defined functions help to decompose a large programs into small segments .

2.  When we are working on large project , that time  this divide the workload  by making small – small functions .

# Find the below exapmle for user defined  function

def addition(x, y):
    add=x+y
    return add
num1=float (input(“Enter the number  1: “))
num2=float(input(“Enter the number 2: “))
print (“sum is “ ,  addition(num1, num2))

output would be ;
>> Enter the number 1:    30.0
>> Enter the numberb 2:   20.5
>> sum is  50.5

* In the above example addition() is the user defined function and intput(), print() and float() are the builtin functions of python .
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