# In here im giving examples on how the def function works in python. 

# Each example is separated by ===

​

def functionName():

    # What to make the function do

==================================================================

​

def myfunction():

    print("Hello World")

myfunction()

​

==================================================================

​

def subtractNum():

    print(34 - 4)

​

subtractNum()

# Output: 30

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​

def functionName(arg1, arg2):

    # What to do with function

functionName(valueForArg1, valueForArg2)

​

==================================================================

def addNum(num1, num2):

  print(num1 + num2)

addNum(2, 4)

​

# Output: 6

==================================================================

​

def multiplyNum(num1):

    return num1 * 8

​

result = multiplyNum(8)

print(result)

​

# Output: 64

==================================================================

OK, basically def function() is a block where you will have one task that you can repeat all over again in the code to make it look short and clean

def functionName(variable):

  //function content

a = 34

b = 78

def total():

  print("The total of a+b is:",a+b)

  #how to print def function

  total()

# declare a function

def function_name(param) :

  # content inside a function

​

function_name(param) # calling function

def Hello

print("Hello")