# Python Program to Swap Two Variables

Given two variables x and y, write a Python program to swap their values. Let’s see different methods in Python to do this task. Method 1: Using Naive approach

The most naive approach is to store the value of one variable(say x) in a temporary variable, then assigning the variable x with the value of variable y. Finally, assign the variable y with the value of the temporary variable.

 `# Python program to demonstrate ` `# swapping of two variables ` ` `  `x ``=` `10` `y ``=` `50` ` `  `# Swapping of two variables ` `# Using third variable ` `temp ``=` `x ` `x ``=` `y ` `y ``=` `temp ` ` `  `print``(``"Value of x:"``, x) ` `print``(``"Value of y:"``, y) `

Output:

```Value of x: 50
Value of y: 10
```

Method 2: Using comma operator

Using the comma operator the value of variables can be swapped without using a third variable.

 `# Python program to demonstrate ` `# swapping of two variables ` ` `  ` `  `x ``=` `10` `y ``=` `50` ` `  `# Swapping of two variables  ` `# without using third variable ` `x, y ``=` `y, x ` ` `  `print``(``"Value of x:"``, x) ` `print``(``"Value of y:"``, y) `

Output:

```Value of x: 50
Value of y: 10
```

Method 3: Using XOR

The bitwise XOR operator can be used to swap two variables. The XOR of two numbers x and y returns a number which has all the bits as 1 wherever bits of x and y differ. For example XOR of 10 (In Binary 1010) and 5 (In Binary 0101) is 1111 and XOR of 7 (0111) and 5 (0101) is (0010).

 `# Python program to demonstrate ` `# Swapping of two variables ` ` `  `x ``=` `10` `y ``=` `50` ` `  `# Swapping using xor ` `x ``=` `x ^ y ` `y ``=` `x ^ y ` `x ``=` `x ^ y ` ` `  `print``(``"Value of x:"``, x) ` `print``(``"Value of y:"``, y) `

Output:

```Value of x: 50
Value of y: 10
```

Method 4: Using arithmetic operators

The idea is to get sum in one of the two given numbers. The numbers can then be swapped using the sum and subtraction from sum.

 `# Python program to demonstrate ` `# swapping of two variables ` ` `  `x ``=` `10` `y ``=` `50` ` `  `# Swapping of two variables ` `# using arithmetic operations ` `x ``=` `x ``+` `y    ` `y ``=` `x ``-` `y   ` `x ``=` `x ``-` `y  ` ` `  `print``(``"Value of x:"``, x) ` `print``(``"Value of y:"``, y) `

Output:

```Value of x: 50
Value of y: 10
```

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