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What are Python operators?
An operator in Python is a character that tells the compiler to perform a specific task on the quantity operand.
It can perform the following operations:
- Arithmetic
- Relational
- Logical
Types of operators
-
Unary operators: Requires a single operand. These are mostly prefix.
-
Binary operator: Requires two operands. These are mostly in-fix.
Note: There are also ternary operators.
Types of operations
1. Arithmetic operations
Arithmetic operations are widely used for mathematical calculations. These operators help in solving all types of arithmetic expressions quickly.
| operator | meaning | example |
|---|---|---|
| + | It adds two operands together, or acts as a sign for a single operand. | 5 + 2 = 7 or +2 (sign) |
| - | It subtracts two operands or acts as a sign for a single operand. | 5 - 2 = 3 or -2 (sign) |
| * | It multiplies two operands. | 5 * 2 = 10 |
| / | It divides two operands. | 10 / 5 = 2 |
| % | It returns a remainder after dividing two operands. | 5 % 2 = 1 |
2. Relational (comparison) operations
These operators run a comparison between two entities and return true or false as per the condition.
3. Logical operations
These operators are used for the conditional statements and return a boolean for every expression.
| relational operator | name | example |
|---|---|---|
| == | Equal | 5 == 5 |
| != | Not Equal | 6 != 5 |
| > | Greater than | 6 > 5 |
| < | Less than | 5 < 6 |
| logical opeartor | meaning | example |
|---|---|---|
| AND | It returns true if both of the statements are true. | x > 5 and y < 15 |
| OR | It returns true if either one of the statements is true. | x > 5 and y < 15 |
| NOT | It reverses the result, for true it returns false | not ( x > 5) |
Example
# setting default values for x and yx = 5y = 15print ('x = ', x)print ('y = ', y)# arithmetical operationprint ('x + y = ',x + y)print ('x - y = ',x - y)print ('x % y = ',x % y)# relational operationprint ('x > y is ',x > y)print ('x < y is ',x < y)print ('x == y is ',x == y)# logical operationprint ('x > 5 and y < 15 is ',x > 5 and y < 15)print ('x > 5 or y < 15 is ',x > 5 or y < 15)
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