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Python当中list列表的使用(创建列表,删除列表元素,添加列表元素,插入列表元素)

时间:2020-03-01 14:27:04      阅读:50      评论:0      收藏:0      [点我收藏+]

标签:ast   ssm   col   class   other   position   python3   desktop   enc   

程序如下:

#这里我们将进行列表的学习,这个列表不能和R当中的列表弄混了
classmate=[bob,Python,Java]
b=["wife","mother"]
print(len(classmate))
#下面开始进行元素的访问,python当中的首元素是0,而不是R当中的1.
print(classmate[0])
print(classmate[0:])
print(classmate[1:2])
print("print the last element:")
print(classmate[-1])
print("\nprint the second last element:")
print(classmate[-2])
print("\nprint the third last element:")
print(classmate[-3])
print("\nlet us append some elements to the end of the list:")
classmate.append(adding element)
print(classmate[-1])
print("\nlet us print all the list!:")
print(classmate)
print("\nlet us delete the last element:")
classmate.pop()
print(classmate)
print("\nlet us delete the second element:")
#delete the element we want
classmate.pop(1)
print(classmate)
print("\nlet us insert somthing to the second position:")
#the insert position is our reference‘s position
classmate.insert(1,"something")
print(classmate)
print("\ninsert a list to our list:")
classmate.insert(1,["insertelement1","insertelement2"])
print(classmate)
print("\nlet us get the second list‘s seconde element:")
print(classmate[1][1])

linux下运行结果如下:

geeksongs@DESKTOP-V7FKNMA:~/code$ python3 list.py
3
bob
[bob, Python, Java]
[Python]
print the last element:
Java

print the second last element:
Python

print the third last element:
bob

let us append some elements to the end of the list:
adding element

let us print all the list!:
[bob, Python, Java, adding element]

let us delete the last element:
[bob, Python, Java]

let us delete the second element:
[bob, Java]

let us insert somthing to the second position:
[bob, something, Java]

insert a list to our list:
[bob, [insertelement1, insertelement2], something, Java]

let us get the second lists seconde element:
insertelement2

得解也。

Python当中list列表的使用(创建列表,删除列表元素,添加列表元素,插入列表元素)

标签:ast   ssm   col   class   other   position   python3   desktop   enc   

原文地址:https://www.cnblogs.com/geeksongs/p/12389402.html

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