Numerical Operations
Normally, when asked to find the sum of two numbers like 8.9 + 86.57, you might use a calculator or a pencil and paper. Well, lets see how we can use Python to perform your calculation?
Let’s try it.
In [2]: # addition of two numbers
8.9 + 86.57
Out[2]: 95.47
As seen above Python can sum up numbers and this can be done for subtraction ( - ), division ( / ) and multiplication ( * ) as seen below.
Subtraction
9 - 4
In [2]: # subtraction of two numbers
9 - 4
Out[2]: 5
Division
20 / 5
In [2]: # division of two numbers
20 / 5
Out[2]: 4.0
Multiplication
9 * 6
In [2]: # multiplication of two numbers
9 * 6
Out[2]: 54
Operators
So far we’ve been using the Arithmetic Operators + , - , / and * but we have more that the python programming shell supports.
| Operator | Operation | Description |
|---|---|---|
| + | Addition | Adds values on either side of the operator. |
| - | Subtraction | Subtracts right hand operand from left hand operand. |
| * | Multiplication | Multiplies values on either side of the operator |
| / | Division | Divides left hand operand by right hand operand |
| % | Modulus | Divides left hand operand by right hand operand and returns remainder |
| ** | Exponent | Performs exponential (power) calculation on operators |
| // | Floor Division | The division of operands where the result is the quotient in which the digits after the decimal point are removed. But if one of the operands is negative, the result is floored, i.e., rounded away from zero (towards negative infinity) |