Python编程 从入门到实践-3列表上

笔记出处(学习UP主视频记录) https://www.bilibili.com/video/av35698354?p=4

3.1 列表是什么

bicyles = ['trek', 'cannondale', 'redline', 'specialize']
print (bicyles)

['trek', 'cannondale', 'redline', 'specialize'] 

3.1 访问列表元素

bicyles = ['trek', 'cannondale', 'redline', 'specialize']
print (bicyles[0])

trek

bicyles = ['trek', 'cannondale', 'redline', 'specialize']
print (bicyles[0].title())

Trek

3.1.2 索引从0而不是1开始

bicyles = ['trek', 'cannondale', 'redline', 'specialize']
print (bicyles[1])
print (bicyles[3])

cannondale
specialize

bicyles = ['trek', 'cannondale', 'redline', 'specialize']
print (bicyles[-1])

specialize

3.1.1 使用列表中的各个值

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

My first bicyles was a Trek.

3.2.1 修改列表元素

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

motorcycles[0] = 'ducati'
print (motorcycles)

['honda', 'yamaha', 'suzuki']
['ducati', 'yamaha', 'suzuki']

3.2.2 在列表中添加元素

1.在列表末尾添加元素

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

motorcycles.append('ducati')
print (motorcycles)

['honda', 'yamaha', 'suzuki']
['honda', 'yamaha', 'suzuki', 'ducati']

motorcycles = []

motorcycles.append('honda')
motorcycles.append('yamaha')
motorcycles.append('suzuki')

print (motorcycles)

['honda', 'yamaha', 'suzuki']

2.在列表中插入元素

motorcycles = ['honda', 'yamaha', 'suzuki']

motorcycles.insert(0,'ducati')
print (motorcycles)

['ducati', 'honda', 'yamaha', 'suzuki']