What output will be generated when the following Python code is executed?
def ChangeList ():
L=[]
L1=[]
L2=[]
for i in range (1, 10):
L.append(i)
for i in range (10, 1, -2):
L1.append(i)
for i in range (len (L1)):
L1.append(L1[i] +L[i])
L2.append(len(L)-len(L1))
print L2
ChangeList()
