primary_colors

primary = ["red","blue","yellow"]
final_color = ''

color_1 = input('Enter primary color:')
color_2 = input('Enter primary color:')


if(color_1 not in primary or color_2 not in primary):
    print("You didn't input two primary colors.")
else:
    if((color_1 == 'red' and color_2=='blue') or (color_2 == 'red' and color_1=='blue')):
        final_color = 'purple'
    elif((color_1 == 'red' and color_2=='yellow') or (color_2 == 'red' and color_1=='yellow')):
        final_color = 'orange'
    elif((color_1 == 'blue' and color_2=='yellow') or (color_2 == 'blue' and color_1=='yellow')):
        final_color = 'green'
    print(f'When you mix {color_1} and {color_2}, you get {final_color}.')