Python def keyword is used to define a function, it is placed before a function name that is provided by the user to create a user-defined function. In python, a function is a logical unit of code containing a sequence of statements indented under a ...

# Python3 code to demonstrate
# def keyword

# function for subtraction of 2 numbers
def subNumbers(x, y):
return (x-y)

# main code
a = 90
b = 50

# finding subtraction
result = subNumbers(a, b)

# print statement
print("subtraction of ", a, " 