empty_list = []
ninjas = ['Rozen', 'KB', 'Oliver']
print(ninjas[2]) 	# output: Oliver
ninjas[0] = 'Francis'
ninjas.append('Michael')
print(ninjas)	# output: ['Francis', 'KB', 'Oliver', 'Michael']
ninjas.pop()
print(ninjas)	# output: ['Francis', 'KB', 'Oliver']
ninjas.pop(1)
print(ninjas)	# output: ['Francis', 'Oliver']
