写在前面:
此博客仅用于记录个人学习进度,学识浅薄,若有错误观点欢迎评论区指出。欢迎各位前来交流。(部分材料来源网络,若有侵权,立即删除)
传送门:
day01基础知识
day02知识分类
day03运算符
day04数字与字符串
day05列表
day06元组与字典
day07条件与循环
day08函数概念
day09数据结构
day10模块介绍
day11文件操作
day12编程学习
day13编程学习
day14编程学习
day15编程学习
day16编程学习
day17编程学习
day18编程学习
>>>tup1 = ('Google', 'Runoob', 1997, 2000)
>>> tup2 = (1, 2, 3, 4, 5 )
>>>tup=()#创建空元组
>>> tup3 = "a", "b", "c", "d" # 不需要括号也可以
>>> type(tup3)
<class 'tuple'>
>>>tup1 = (50)
>>> type(tup1) # 不加逗号,类型为整型
<class 'int'>
>>> tup1 = (50,)
>>> type(tup1) # 加上逗号,类型为元组
<class 'tuple'>
#!/usr/bin/python3
tup1 = ('Google', 'Runoob', 1997, 2000)
tup2 = (1, 2, 3, 4, 5, 6, 7 )
print ("tup1[0]: ", tup1[0])
print ("tup2[1:5]: ", tup2[1:5])
#!/usr/bin/python3
tup1 = (12, 34.56)
tup2 = ('abc', 'xyz')
# 以下修改元组元素操作是非法的。
# tup1[0] = 100
# 创建一个新的元组
tup3 = tup1 + tup2
print (tup3)
#!/usr/bin/python3
tup = ('Google', 'Runoob', 1997, 2000)
print (tup)
del tup
print ("删除后的元组 tup : ")
print (tup)
>>> L = ('Google', 'Taobao', 'Runoob')
>>> L[2]
'Runoob'
>>> L[-2]
'Taobao'
>>> L[1:]
('Taobao', 'Runoob')
>>> tuple1 = ('Google', 'Runoob', 'Taobao')
>>> len(tuple1)
3
>>>
>>> tuple2 = ('5', '4', '8')
>>> max(tuple2)
'8'
>>>
>>> tuple2 = ('5', '4', '8')
>>> min(tuple2)
'4'
>>>
>>> list1= ['Google', 'Taobao', 'Runoob', 'Baidu']
>>> tuple1=tuple(list1)
>>> tuple1
('Google', 'Taobao', 'Runoob', 'Baidu')
>>> tup = ('r', 'u', 'n', 'o', 'o', 'b')
>>> tup[0] = 'g' # 不支持修改元素
Traceback (most recent call last):
File "" , line 1, in <module>
TypeError: 'tuple' object does not support item assignment
>>> id(tup) # 查看内存地址
4440687904
>>> tup = (1,2,3)
>>> id(tup)
4441088800 # 内存地址不一样了
d = {key1 : value1, key2 : value2 }
dict = {'Alice': '2341', 'Beth': '9102', 'Cecil': '3258'}
或
dict1 = { 'abc': 456 }
dict2 = { 'abc': 123, 98.6: 37 }
#!/usr/bin/python3
dict = {'Name': 'Runoob', 'Age': 7, 'Class': 'First'}
print ("dict['Name']: ", dict['Name'])
print ("dict['Age']: ", dict['Age'])
输出结果:
#!/usr/bin/python3
dict = {'Name': 'steve', 'Age': 7, 'Class': 'First'}
print ("dict['Alice']: ", dict['Alice'])
#!/usr/bin/python3
dict = {'Name': 'steve', 'Age': 7, 'Class': 'First'}
dict['Age'] = 8 # 更新 Age
dict['School'] = "光明小学" # 添加信息
print ("dict['Age']: ", dict['Age'])
print ("dict['School']: ", dict['School'])
#!/usr/bin/python3
dict = {'Name': 'steve', 'Age': 7, 'Name': '小笨蛋'}
print ("dict['Name']: ", dict['Name'])
#!/usr/bin/python3
dict = {['Name']: 'steve', 'Age': 7}
print ("dict['Name']: ", dict['Name'])
end
好的今天也坚持下来了,加油,希望明天能继续坚持!