使用列表的各个值

bicycles = ['trek', 'cannondale', 'redline', 'specialized'] 
message = "My first bicycle was a " + bicycles[0].title() + "."
print(message)

修改列表元素

例如修改第一个honda

 motorcycles = ['honda', 'yamaha', 'suzuki']
 print(motorcycles) 
 motorcycles[0] = 'ducati'
 print(motorcycles)

在列表中插入元素

例如在第一个元素前面再插入一个元素

motorcycles = ['honda', 'yamaha', 'suzuki'] 
 motorcycles.insert(0,'ducati')
  print(motorcycles)

从列表中删除元素

利用del语句

例如删除第一个

 del motorcycles[0]
 print(motorcycles)

利用pop（）删除列表末尾的元素

 motorcycles = ['honda', 'yamaha', 'suzuki']
 print(motorcycles) 
 popped_motorcycle = motorcycles.pop()  
 print(motorcycles)  
 print(popped_motorcycle)

输出为
[‘honda’, ‘yamaha’, ‘suzuki’]
[‘honda’, ‘yamaha’]
suzuki

即删除元素储存在变量popped_motorcycle中了

也可以用pop删除任何位置的元素

例如删除第一个

first_owned = motorcycles.pop(0)

根据值删除

 motorcycles.remove('ducati')print(motorcycles)