How can you swap two variables in Python?

How can you swap two variables in Python?

• A. By using the built-in swap function
• B. By creating a temporary variable
• C. Using a single line: a, b = b, a
• D. By using the tuple method

Answer: (C)

Swapping two variables in Python can be elegantly achieved using the syntax `a, b = b, a`. This method leverages Python's ability to perform tuple unpacking, allowing the assignment of both variables to occur simultaneously. When the expression on the right side is evaluated, it creates a tuple with the values of `b` and `a`, which are then unpacked into `a` and `b` respectively. This approach is not only concise but also efficient, as it avoids the need for extra memory allocation for a temporary variable, which is a common practice in other programming languages. The syntax `a, b = b, a` reflects Python's design philosophy of simplicity and readability, making it an ideal choice for swapping variables. Using a temporary variable is a traditional method that involves assigning one variable's value to a third variable and then transferring the value from that variable back. While this method works perfectly fine in Python, it is more verbose and less idiomatic compared to the tuple unpacking method. The other options, such as using a built-in swap function or the tuple method, are either misleading or not applicable in the context described. Python does not have a specific swap function, and while tuples can be involved in the swapping process

Swapping two variables in Python can be elegantly achieved using the syntax a, b = b, a. This method leverages Python's ability to perform tuple unpacking, allowing the assignment of both variables to occur simultaneously. When the expression on the right side is evaluated, it creates a tuple with the values of b and a, which are then unpacked into a and b respectively.

This approach is not only concise but also efficient, as it avoids the need for extra memory allocation for a temporary variable, which is a common practice in other programming languages. The syntax a, b = b, a reflects Python's design philosophy of simplicity and readability, making it an ideal choice for swapping variables.

Using a temporary variable is a traditional method that involves assigning one variable's value to a third variable and then transferring the value from that variable back. While this method works perfectly fine in Python, it is more verbose and less idiomatic compared to the tuple unpacking method.

The other options, such as using a built-in swap function or the tuple method, are either misleading or not applicable in the context described. Python does not have a specific swap function, and while tuples can be involved in the swapping process