Python Assignment Operators

Assume variable a holds 10 and variable b holds 20, then −

Sr.No	Operator & Description	Example
1	= Assigns values from right side operands to left side operand	c = a + b assigns value of a + b into c
2	+= Add AND It adds right operand to the left operand and assign the result to left operand	c += a is equivalent to c = c + a
3	-= Subtract AND If values of two operands are not equal, then condition becomes true.It subtracts right operand from the left operand and assign the result to left operand	c -= a is equivalent to c = c - a
4	*= Multiply AND It multiplies right operand with the left operand and assign the result to left operand	c = a is equivalent to c = c a
5	/= Divide AND It divides left operand with the right operand and assign the result to left operand	c /= a is equivalent to c = c / a
6	%= Modulus AND It takes modulus using two operands and assign the result to left operand	c %= a is equivalent to c = c % a
7	**= Exponent AND Performs exponential (power) calculation on operators and assign value to the left operand	c = a is equivalent to c = c a
8	//= Floor Division It performs floor division on operators and assign value to the left operand	c //= a is equivalent to c = c // a

Example

Assume variable a holds 10 and variable b holds 20, then −

#!/usr/bin/python
a = 21
b = 10
c = 0
c = a + b
print "Line 1 - Value of c is ", c
c += a
print "Line 2 - Value of c is ", c
c *= a
print "Line 3 - Value of c is ", c
c /= a
print "Line 4 - Value of c is ", c
c = 2
c %= a
print "Line 5 - Value of c is ", c
c **= a
print "Line 6 - Value of c is ", c
c //= a
print "Line 7 - Value of c is ", c

Output

When you execute the above program it produces the following result −

Line 1 - Value of c is 31
Line 2 - Value of c is 52
Line 3 - Value of c is 1092
Line 4 - Value of c is 52
Line 5 - Value of c is 2
Line 6 - Value of c is 2097152
Line 7 - Value of c is 99864