Swap two variables in one line in using Python?

Python provides several ways to swap two variables in a single line. The most Pythonic approach uses tuple unpacking, but you can also use arithmetic or bitwise operators ?

Using Tuple Unpacking (Recommended)

Python's tuple unpacking allows you to swap variables in one elegant line using the comma operator ?

a = 5
b = 10

print("Before swapping:")
print("a =", a)
print("b =", b)

# Swap two variables in one line using tuple unpacking
a, b = b, a

print("\nAfter swapping:")
print("a =", a)
print("b =", b)

Before swapping:
a = 5
b = 10

After swapping:
a = 10
b = 5

Using Arithmetic Operations

You can swap variables using multiplication and division, though this method has limitations with zero values ?

a = 5
b = 10

print("Before swapping:")
print("a =", a)
print("b =", b)

# Swap using arithmetic operations
a = a * b
b = a / b
a = a / b

print("\nAfter swapping:")
print("a =", a)
print("b =", b)

Before swapping:
a = 5
b = 10

After swapping:
a = 10.0
b = 5.0

Using XOR Operator

The XOR bitwise operator can swap integers without using temporary variables ?

a = 5
b = 10

print("Before swapping:")
print("a =", a)
print("b =", b)

# Swap using XOR operator
a = a ^ b
b = a ^ b
a = a ^ b

print("\nAfter swapping:")
print("a =", a)
print("b =", b)

Before swapping:
a = 5
b = 10

After swapping:
a = 10
b = 5

Comparison

Conclusion

Use tuple unpacking a, b = b, a for swapping variables in Python as it's the most readable and works with any data type. Avoid arithmetic and XOR methods unless you have specific constraints requiring them.