列表，元组，字典

数字运算

https://www.cnblogs.com/fifthselm/p/9559899.html

https://blog.csdn.net/u013894427/article/details/80261206

字符串操作

name.capitalize() 首字母大写
name.casefold() 大写全部变小写
name.center(50,"-") 输出 ‘---------------------matt----------------------‘
name.count(‘a‘) 统计 a出现次数
name.encode() 将字符串编码成bytes格式
name.endswith("Li") 判断字符串是否以 Li结尾
"Alex\tLi".expandtabs(10) 输出‘Alex Li‘， 将\t转换成多长的空格
name.find(‘A‘) 查找A,找到返回其索引， 找不到返回-1

format :
>>> msg = "my name is {}, and age is {}"
>>> msg.format("alex",22)
‘my name is alex, and age is 22‘
>>> msg = "my name is {1}, and age is {0}"
>>> msg.format("alex",22)
‘my name is 22, and age is alex‘
>>> msg = "my name is {name}, and age is {age}"
>>> msg.format(age=22,name="ale")
‘my name is ale, and age is 22‘
format_map
>>> msg.format_map({‘name‘:‘alex‘,‘age‘:22})

#字典的形式
‘my name is alex, and age is 22‘

msg.index(‘a‘) 返回a所在字符串的索引
‘9aA‘.isalnum() True

‘9‘.isdigit() 是否整数
name.isnumeric
name.isprintable
name.isspace
name.istitle
name.isupper
"|".join([‘alex‘,‘jack‘,‘rain‘])
‘alex|jack|rain‘

maketrans
>>> intab = "aeiou" #This is the string having actual characters.
>>> outtab = "12345" #This is the string having corresponding mapping character
>>> trantab = str.maketrans(intab, outtab)
>>>
>>> str = "this is string example....wow!!!"
>>> str.translate(trantab)
‘th3s 3s str3ng 2x1mpl2....w4w!!!‘

msg.partition(‘is‘) 输出 (‘my name ‘, ‘is‘, ‘ {name}, and age is {age}‘)

>>> "alex li, chinese name is lijie".replace("li","LI",1)
‘alex LI, chinese name is lijie‘

msg.swapcase 大小写互换

>>> msg.zfill(40)
‘00000my name is {name}, and age is {age}‘

>>> n4.ljust(40,"-")
‘Hello 2orld-----------------------------‘
>>> n4.rjust(40,"-")
‘-----------------------------Hello 2orld‘

>>> b="ddefdsdff_哈哈"
>>> b.isidentifier() #检测一段字符串可否被当作标志符，即是否符合变量命名规则
True

列表

增删改查

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘]
name.append(‘tony‘)
print(name)

[‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘tony‘]

切片

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
print(name[0:3])
print(name[:3])
print(name[2:-1])
print(name[2:])
print(name[-2:-1])
print(name[::3])#每3个元素取一个

[‘matt‘, ‘jordan‘, ‘logan‘]
[‘matt‘, ‘jordan‘, ‘logan‘]
[‘logan‘, ‘summer‘, ‘linda‘]
[‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
[‘linda‘]
[‘matt‘, ‘summer‘]

insert

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
name.insert(1 ,‘jump‘)
print(name)

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
name[2] = ‘mike‘
print(name)

[‘matt‘, ‘jordan‘, ‘mike‘, ‘summer‘, ‘linda‘, ‘amy‘]

删除 del

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
del name[2]
print(name)

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
name.remove(‘matt‘)
print(name)

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
name.pop()
print(name)

扩展

name = [‘matt‘, ‘jordan‘, ‘logan‘]
names = [‘summer‘, ‘linda‘, ‘amy‘]
name.extend(names)
print(name, names)

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘, ‘amy‘]
print(name.count(‘amy‘))

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘]
print(name.index(‘logan‘))

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘,1,2,3]
name.sort()

name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘,‘1‘,‘2‘,‘3‘]
name.sort()
print(name)
name.reverse()
print(name)

赋值，浅copy和深copy

import copy
name = [‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘,[‘linda‘, ‘amy‘] ]
name1 = name
name2 = name.copy()
name3 = copy.copy(name)
name4 = copy.deepcopy(name)
name[0] = ‘MATT‘
name[4][0] = ‘LINDA‘
print(name1)
print(name2)
print(name3)
print(name4)

元组

只读列表

name = (‘matt‘, ‘jordan‘, ‘logan‘, ‘summer‘, ‘linda‘, ‘amy‘,‘amy‘)
print(name.count(‘amy‘))
print(name.index(‘amy‘))

字典

字典是wuxu

列表，元组，字典

原文：https://www.cnblogs.com/mushuiyishan/p/10459120.html