import bpy
import mathutils
import copy

def copyTest(varA, varB):
    print("  before varB chng: varA == varB ?", varA == varB)
    varB[0] = varB[0] + 1
    varB[1] = varB[1] + 1
    print("   after varB chng: varA == varB ?", varA == varB)

print()


print("\ntest 1, List_2 = List_1")
L_a = [ 1.2, 2.5 ]
L_b = L_a
copyTest(L_a, L_b)

print("\ntest 2, List_2 = List_1.copy()")
L_b = L_a.copy()
copyTest(L_a, L_b)

print("\ntest 3, List_2 = deepcopy(List_1)")
L_b = copy.deepcopy(L_a)
copyTest(L_a, L_b)


print("\ntest 4, Vector_2 = Vector_1")
V_a = mathutils.Vector(( 1.2, 2.5 ))
V_b = V_a
copyTest(V_a, V_b)

print("\ntest 5, Vector_2 = Vector_1.copy()")
V_b = V_a.copy()
copyTest(V_a, V_b)

print("\ntest 6, Vector_2 = deepcopy(Vector_1)")
V_b = copy.deepcopy(V_a)
copyTest(V_a, V_b)


print("\ntest 7, Euler_2 = Euler_1")
E_a = mathutils.Euler((0.0, 0.5236, 1.5708), 'XYZ')
E_b = E_a
copyTest(E_a, E_b)

print("\ntest 8, Euler_2 = Euler_1.copy()")
E_b = E_a.copy()
copyTest(E_a, E_b)

print("\ntest 9, Euler_2 = deepcopy(Euler_1)")
E_b = copy.deepcopy(E_a)
copyTest(E_a, E_b)