l = [42, 3, 2, 'pippo', 4]
print l[0]   # 42
print l[-2]  # pippo
print len(l) # 5

l.append(5)
print l       # [42, 3, 2, 'pippo', 4, 5]

l.remove('pippo')
print l       # [42, 3, 2, 4, 5]

l.sort()
print l       # [2, 3, 4, 5, 42]