We have discussed different approaches to swap two integers without the temporary variable. How to swap into a single line without using the library function?
Python: In Python, there is a simple and syntactically neat construct to swap variables, we just need to write “x, y = y, x”.

In Python, we can swap the values of two variables using a one-liner code. This is commonly known as the "Pythonic" way of swapping two variables.

Here is the Python program to swap two variables in one line: 

a, b = b, a

In this code, we are using tuple packing and unpacking to swap the values of two variables. We first pack the values of a and b into a tuple, (b, a), and then unpack them into the variables a and b in reverse order. This effectively swaps the values of the two variables.

Here's an example of how to use this code to swap two variables: 

a = 10
b = 20
print("Before swapping: a =", a, "b =", b)
a, b = b, a
print("After swapping: a =", a, "b =", b)

Output: 

Before swapping: a = 10 b = 20
After swapping: a = 20 b = 10

In this example, we first set the values of a and b to 10 and 20, respectively. We then print their values before and after swapping using the print function. Finally, we swap the values of a and b using the one-liner code, a, b = b, a.