1.Python 可以通过将索引指定为-1，让Python返回列表最后一个元素。
2.修改列表元素时，只需要将需要修改的元素重新赋值即可，例；
motorcycles = ['honda', 'yamaha', 'suzuki']
print(motorcycles)
motorcycles[0] = 'ducati'
print(motorcycles)
['honda', 'yamaha', 'suzuki']
['ducati', 'yamaha', 'suzuki']
3.在列表末尾添加元素用方法append()，在列表中插入元素用方法insert(）
例1.motorcycles = []
motorcycles.append('honda')
motorcycles.append('yamaha')
motorcycles.append('suzuki')
print(motorcycles)
['honda', 'yamaha', 'suzuki']
例2motorcycles = ['honda', 'yamaha', 'suzuki']
motorcycles.insert(0, 'ducati')
print(motorcycles)
['ducati', 'honda', 'yamaha', 'suzuki']
3.删除元素用del语法(知道元素在列表中的位置)
motorcycles = ['honda', 'yamaha', 'suzuki']
print(motorcycles)
del motorcycles[0]
print(motorcycles)
['honda', 'yamaha', 'suzuki']
['yamaha', 'suzuki']
方法pop()可删除列表末尾的元素，并让你能够接着使用它。术语弹出（pop）源自这样的类 比：列表就像一个栈，而删除列表末尾的元素相当于弹出栈顶元素。
motorcycles = ['honda', 'yamaha', 'suzuki']
print(motorcycles)
popped_motorcycle = motorcycles.pop()
print(motorcycles)
poped_motorcycle)
['honda', 'yamaha', 'suzuki']
['honda', 'yamaha'] suzuki