L5

#a = [1 ,2, 3] #list
#b = [1 ,2, 3]

#print(a, id(b))

#c = b
#print(b, c)
#b[0] = 10
#print(a, b, c)
#c[0] = 3
#print(a, b ,c)

#print(a[0] is b[0], b is c)

#--------tuple

#d = 1,2,3
#print(d)

#e = 1,
#print(e)

#b = tuple(a)
#print(a,b)

#c = 1,2,3
#d = list(c)
#print(a,b,c,d)

#a = [1]
#b = [2]

#a = 2, b = 1
#b,a = a,b
#print(a,b)

#c = a,b
#b,a,c = c,c,a # (1,2) , (1,2)
#print(a,b,c)

#a = [1]
#b = [2]
#c = a,b
#(b,a),(a,b),c = c,c,a
#print(a,b,c)

#a = [1, 2, 3, 4, 5, 6]
#print(a[1 : 5 : 2])

a = [1 ,2 ,3 ,4, 5, 6,7 ,8 ,9, 10, 11]
print(a[1 : 10 : 4])