items = [12, 2, 'str', [], {}]
print(items)
for i in range(0, len(items)):
    print(items[i])

print(items[1:3])

print(items * 3)

print(items + items)

print(12 in items)

items.append(4)

print(items)

items.extend(items)

print(items)

print(items.index(12))

print(items.count(12))

items.reverse()
print(items)
items.reverse()

nums = [1, 2, 3, 4, 5, 6, 11, 10]
nums.sort()
print(nums)

x = nums.copy()
print(x)

x.clear()
print(x)

for z in items:
    print(z)

items.pop(0)

L = [x**2 for x in range(5)]
print(L)