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\']