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def swapper(a, b):
  """Swaps the values of two variables.

  Args:
    a: The first variable.
    b: The second variable.

  Returns:
    A tuple containing the swapped values (b, a).
  """
  return b, a

# Example usage:
x = 5
y = 10
print(f"Before swap: x = {x}, y = {y}")

x, y = swapper(x, y)

print(f"After swap: x = {x}, y = {y}")