Python Operators
Operators provides a vital role in programming, and in combination with values and other identifiers form expressions and statements, which is also an important building block for Python programming.
Operators and Operands
Python operators are symbol that is used to perform mathematical or logical manipulations. Operands are the values or variables with which the operator is applied to, and values of operands can manipulate by using the operators.
Let us take a Scenario:
6 + 2=8, where there are two operands and a plus (+) operator, and the result turns 8.
Here a single operator is used to manipulate the values. The +, -, *, / and ** does addition, subtraction, multiplication, division & exponentiation respectively.
Types of Python Operators
Python programming language is rich with built-in operators.
The following types of operators are supported by Python:
Arithmetic Operators
| Symbol | Operator Name | Description |
|---|---|---|
| + | Addition | Adds the values on either side of operator and calculate a result. |
| – | Subtraction | Subtracts values of right side operand from left side operand. |
| * | Multiplication | Multiplies the values on both sides of the operator. |
| / | Division | Divides left side operand with right side operand. |
| % | Modulus | It returns the remainder by dividing the left side operand with right side operand |
| ** | Exponent | Calculates the exponential power |
| // | Floor Division | Here the result is the quotient in which the digits after decimal points are not taken into account. |
Assignment Operators
| Symbol | Operator Name | Description |
|---|---|---|
| = | Equal | Assigns the values of right side operand to left side operand. |
| += | Add AND | Adds right side operand value to the left side operand value and assigns the results to left operand. |
| -= | Subtract AND | Subtracts right side operand value to the left side operand value and assigns the results to left operand. |
| *= | Multiply AND | Similarly does their respective operations and assigns the operator value to the left operand. |
| /= | Division AND | |
| %= | Modulus AND | |
| **= | Exponent AND | |
| //= | Floor Division AND |
Comparison (Relational) Operators
| Symbol | Operator Name | Description |
|---|---|---|
| == | Double Equal | If the two value of its operands are equal, then the condition becomes true, otherwise false |
| != or <> | Not Equal To | If two operands values are not equal, then condition becomes true. Both the operators defines the same meaning and function |
| > | Greater Than | If the value of left hand operand is greater than the value of right hand operand, condition becomes true. |
| < | Less Than | If the value of left hand operand is less than the value of right operand, then condition becomes true. |
| <= | Less Than Equal To | If the value of left hand operand is less than or equal to the value of right hand operand, condition becomes true. |
| >= | Greater Than Equal To | If the value of left hand operand is greater than or equal to the value of right hand operand, condition becomes true. |
Logical Operators
| Symbol | Operator Name | Description |
|---|---|---|
| or | Logical OR | If any of the two operands are non-zero, then condition is true. |
| and | Logical AND | If both the operands are true then condition is true. |
| not | Logical NOT | It is used to reverse the logical state of its operand. |
Identity Operators
For comparing memory locations of two objects, identity operators are used.
There are two types of identity operators. These are:
| Symbol | Operator Name | Description |
|---|---|---|
| is | is | The result becomes true, if values on either side of the operator points to the same object & False otherwise. |
| is not | is not | The result becomes False if the variables on either side of the operator points to the same object |
Bitwise Operators
These operators are used to manipulate with bits, & performs bit-by-bit operations.
There are six types of bitwise operators supported by Python. These are:
| Symbol | Operator Name | Description |
|---|---|---|
| & | Binary AND | This operator copies the bit to the result if it exists in both operands. |
| | | Binary OR | This operator copies the bit if it exists in either of the operand. |
| ^ | Binary XOR | This operator copies the bit if it is set in one operand but not both. |
| ~ | Binary 1s Complement | This is a unary operator and has the ability of ‘flipping’ bits. |
| << | Binary Left Shift | The left operands value is moved left by the number of bits specified by the right operand using this operator. |
| >> | Binary Right Shift | The left operands value is moved right by the number of bits specified by the right operand using this operator. |
Membership Operators
| Symbol | Operator Name | Description |
|---|---|---|
| in | in | The result of this operation becomes True if it finds a value in a specified sequence & False otherwise. |
| not in | not in | result of this operation becomes True if it doesn’t finds a value in a specified sequence & False otherwise. |
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