Definition of function

• Function blocks begin with the keyword def.
• Followed by the function name and parentheses ().
• The code block within every function starts with a colon (:) and is indented.
• Any input parameters or arguments should be placed within these parentheses.

Syntax.

• We can also define parameters inside these parentheses.
• def functionname( arguments ):

Code block

• Return statement

Function call statement.

• To call the function by passing the arguments to the function.
• We can also call a function using by pass referen

#python function
def sum(a,b):
c=a+b
if(a==b):
print(c+2)
else:
print(c)
print(“****First execution*****”)

#calling the function
sum(5,6)

#calling by reference
input1=5
input2=5
print(“****Second execution*****”)
sum(input1,input2)