Python has predefined functions for several mathematical, logical, relational, bit wise etc operations under the module “operator”. a number of the essential functions are covered during this article.

  1. add (a, b) : This function returns additionof the given arguments.
    Operation – a + b.
  2. sub (a, b):This function returns difference of the given arguments.
    Operation – a – b.
  3. mul (a, b): This function returns productof the given arguments.
    Operation – a * b
# Python code to demonstrate working of  
# add(), sub(), mul() 
  
# importing operator module  
import operator 
  
# Initializing variables 
a = 4
  
b = 3
  
# using add() to add two numbers 
print ("The addition of numbers is :",end=""); 
print (operator.add(a, b)) 
  
# using sub() to subtract two numbers 
print ("The difference of numbers is :",end=""); 
print (operator.sub(a, b)) 
  
# using mul() to multiply two numbers 
print ("The product of numbers is :",end=""); 
print (operator.mul(a, b))

Output:

The addition of numbers is :7
The difference of numbers is :1
The product of numbers is :12

    4. true div(a,b) :- This function returns division of the given arguments.
Operation – a / b.

     5. floor div(a,b) :- This function also returns division of the given arguments. But the value is floored value i.e. returns greatest small integer.
Operation – a // b.

     6. pow(a,b) :- This function returns exponentiation of the given arguments.
Operation – a ** b.

      7. mod(a,b) :- This function returns modulus of the given arguments.
Operation – a % b.

# Python code to demonstrate working of  
# truediv(), floordiv(), pow(), mod() 
  
# importing operator module  
import operator 
  
# Initializing variables 
a = 5
  
b = 2
  
# using truediv() to divide two numbers 
print ("The true division of numbers is : ",end=""); 
print (operator.truediv(a,b)) 
  
# using floordiv() to divide two numbers 
print ("The floor division of numbers is : ",end=""); 
print (operator.floordiv(a,b)) 
  
# using pow() to exponentiate two numbers 
print ("The exponentiation of numbers is : ",end=""); 
print (operator.pow(a,b)) 
  
# using mod() to take modulus of two numbers 
print ("The modulus of numbers is : ",end=""); 
print (operator.mod(a,b)

Output:

The true division of numbers is : 2.5
The floor division of numbers is : 2
The exponentiation of numbers is : 25
The modulus of numbers is : 1

      8. lt(a, b) :- This function is used to check if a is less than b or not. Returns true if a is less than b, else returns false.
Operation – a < b.

      9. le(a, b) :- This function is used to check if a is less than or equal to b or not. Returns true if a is less than or equal to b, else returns false.
Operation – a <= b.

      10. eq(a, b) :- This function is used to check if a is equal to b or not. Returns true if a is equal to b, else returns false.
Operation – a == b.

# Python code to demonstrate working of  
# lt(), le() and eq() 
  
# importing operator module  
import operator 
  
# Initializing variables 
a = 3
  
b = 3
  
# using lt() to check if a is less than b 
if(operator.lt(a,b)): 
       print ("3 is less than 3") 
else : print ("3 is not less than 3") 
  
# using le() to check if a is less than or equal to b 
if(operator.le(a,b)): 
       print ("3 is less than or equal to 3") 
else : print ("3 is not less than or equal to 3") 
  
# using eq() to check if a is equal to b 
if (operator.eq(a,b)): 
       print ("3 is equal to 3") 
else : print ("3 is not equal to 3")

Output:

3 is not less than 3
3 is less than or equal to 3
3 is equal to 3

      11. gt(a,b) :- This function is used to check if a is greater than b or not. Returns true if a is greater than b, else returns false.
Operation – a > b.

     12. ge(a,b) :- This function is used to check if a is greater than or equal to b or not. Returns true if a is greater than or equal to b, else                        returns false.
Operation – a >= b.

     13. ne(a,b) :- This function is used to check if a is not equal to b or is equal. Returns true if a is not equal to b, else returns false.
Operation – a != b.

# Python code to demonstrate working of  
# gt(), ge() and ne() 
  
# importing operator module  
import operator 
  
# Initializing variables 
a = 4
  
b = 3
  
# using gt() to check if a is greater than b 
if (operator.gt(a,b)): 
       print ("4 is greater than 3") 
else : print ("4 is not greater than 3") 
  
# using ge() to check if a is greater than or equal to b 
if (operator.ge(a,b)): 
       print ("4 is greater than or equal to 3") 
else : print ("4 is not greater than or equal to 3") 
  
# using ne() to check if a is not equal to b 
if (operator.ne(a,b)): 
       print ("4 is not equal to 3") 
else : print ("4 is equal to 3")

Output:

4 is greater than 3
4 is greater than or equal to 3
4 is not equal to 3

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