Tuples are often used to return multiple values from a Python function. Let's create a simple function that takes the x, y, and z components of a Euclidean vector and returns the unit vector that points in the same direction.
def get_unit_vector(x, y, z):
"""
Returns the unit vector that is codirectional with
the vector with given x, y, z components.
This function uses a tuple to return multiple values.
"""
norm = sqrt(x**2 + y**2 + z**2)
return x / norm, y / norm, z / norm
x = 3.434
y = -2.1
z = 7.991
unit_x, unit_y, unit_z = get_unit_vector(x, y, z)
print("Unit vector:")
print("x: " + str(unit_x) + " y: " + str(unit_y) +
" z: " + str(unit_z))
print("Norm: " + str(sqrt(unit_x**2 + unit_y**2 + unit_z**2)))Execute the code. The results should look like this:
