| Operator | Description |
|---|---|
| + | Addition |
| – | Subtraction |
| * | Multiplication |
| / | Division |
| // | Floor division |
| ** | Power |
| % | Reminder |
Addition
a = 90
b = 23
x = a + 100
y = a + b
z = x + b
print(x)
print(y)
print(z)Output:
190
113
213Subtraction
a = 90
b = 23
x = a - 100
y = a - b
z = x - b
print(x)
print(y)
print(z)Output:
-10
67
-33Multiplication
a = 90
b = 23
x = a * 100
y = a * b
z = x * b
print(x)
print(y)
print(z)Output:
9000
2070
207000Division
a = 90
b = 23
x = a / 100
y = a / b
z = x / b
print(x)
print(y)
print(z)Output:
0.9
3.9130434782608696
0.0391304347826087Floor Division
a = 90
b = 20
x = a // 10 # 90 / 10 = 9
y = a // b # 90 / 20 = 4.5
z = x // b # 9 / 20 = 0.45
print(x)
print(y)
print(z)Output:
9
4
0Reminder
a = 90
b = 23
x = a % 8
y = a % b
z = x % b
print(x)
print(y)
print(z)Output:
2
21
2Power
a = 90
b = 23
x = a ** 3
y = a ** b
z = x ** b
print(x)
print(y)
print(z)Output:
729000
886293811965250109592900000000000000000000000
696198609130885597695136021593547814689632716312296141651066450089000000000000000000000000000000000000000000000000000000000000000000000Precedence of Mathematical Operators
Not all operators have the same precedence. Based on the operators’ priority/precedence, the evaluation sequence will change.
Let’s check the precedence of the operators and how that affects the evaluation of an expression-
Notes
Expressions are evaluated from Left to Right when they have the same precedence.
Let’s evaluate the following operation-
(3 + 7) * 24 / 2 ** 2 + 6
The operation will be performed as below-
Let’s check the same thing in code-
calculated_value = (3 + 7) * 24 / 2 ** 2 + 6
# 10 * 24 / 2 ** 2 + 6
# 10 * 24 / 4 + 6
# 10 * 6 + 6
# 60 + 6
# 66
print(calculated_value)Output:
66.0Augmented Assignment Operators
We can use the mathematical operators, perform the operation and assign at the same time, by using the following operator
| Operator | Description | Example | Equivalent Normal Operation |
|---|---|---|---|
| += | Add and assign | x += 10 | x = x + 10 |
| -= | Subtract and assign | x -= 10 | x = x – 10 |
| *= | Multiply and assign | x *= 10 | x = x * 10 |
| /= | Divide and assign | x /= 10 | x = x / 10 |
| //= | Floor divide and assign | x //= 10 | x = x // 10 |
| **= | Exponenatiate and assign | x **= 10 | x = x ** 10 |
| %= | Modulo and assign | x %= 10 | x = x % 10 |