Python Assignment Operators

Assignment Operators

Assignment operators are used to assign values to variables.

note

There are various compound operators in Python.

For example, a += 2 adds 2 to the variable and then assigns it to the variable. It is equivalent to a = a + 2.

Operator	Description	Example	Equivalent to
=	Assign value of right side of expression to left side operand	x = 2	x = 2
+=	Add right-side operand with left side operand and then assign to left operand	x += 2	x = x + 2
-=	Subtract right operand from left operand and then assign to left operand	x -= 2	x = x - 2
*=	Multiply right operand with left operand and then assign to left operand	x *= 2	x = x * 2
/=	Divide left operand with right operand and then assign to left operand	x /= 2	x = x / 2
%=	Takes modulus using left and right operands and assign the result to left operand	x %= 2	x = x % 2
//=	Divide left operand with right operand and then assign the value(floor) to left operand	x //= 2	x = x // 2
**=	Calculate exponent(raise power) value using operands and assign value to left operand	x **= 2	x = x ** 2
&=	Performs Bitwise AND on operands and assign value to left operand	x &= 2	x = x & 2
&124;=	Performs Bitwise OR on operands and assign value to left operand	x &124;= 2	x = x &124; 2
^=	Performs Bitwise XOR on operands and assign value to left operand	x ^= 2	x = x ^ 2
>>=	Performs Bitwise right shift on operands and assign value to left operand	x >>= 2	x = x >> 2
<<=	Performs Bitwise left shift on operands and assign value to left operand	x <<= 2	x = x << 2

Examples

Assign

a = 2
b = 3
result = a + b
print(result) # 5

Add and Assign

a = 2
b = 3
a += b   # a = a + b
print(a) # 5

Subtract and Assign

a = 2
b = 3
a -= b   # a = a - b
print(a) # -1

Multiply and Assign

a = 2
b = 3
a *= b   # a = a * b
print(a) # 6

Divide and Assign

a = 2
b = 3
a /= b   # a = a / b
print(a) # 0.6666666666666666

Modulus and Assign

a = 2
b = 3
a %= b   # a = a % b
print(a) # 2

Divide (floor) and Assign

a = 2
b = 3
a //= b  # a = a // b
print(a) # 0

Exponent and Assign

a = 2
b = 3
a **= b  # a = a ** b
print(a) # 8

Bitwise AND and Assign

a = 2    # 2 (0010)
b = 3    # 3 (0011)
a &= b   # a = a & b
print(a) # 2 (0010)

Bitwise OR and Assign

a = 2    # 2 (0010)
b = 3    # 3 (0011)
a |= b   # a = a | b
print(a) # 3 (0011)

Bitwise XOR and Assign

a = 2    # 2 (0010)
b = 3    # 3 (0011)
a ^= b   # a = a ^ b
print(a) # 1 (0001)

Bitwise Right Shift and Assign

a = 2    # 2 (0010)
b = 3    # 3 (0011)
a >>= b  # a = a >> b
print(a) # 0 (0000)

Bitwise Left Shift and Assign

a = 2    # 2  (0010)
b = 3    # 3  (0011)
a <<= b  # a = a << b
print(a) # 16 (1000)