Python---tuples

I. Tuple (tuple)

Tuples are similar to lists, but once created, they cannot be modified, so they are also called read-only lists.

Tuples have only two methods: Count & index.

eg. Names = ("Zhangsan", "Lisi")

See Yumbo Main Blog http://www.cnblogs.com/alex3714/articles/5717620.html

Two. strings (string)

Error Highlights

indentationerror:unexpected indent indicates indentation errors (which will be summed up later)

Name ="Xiaolaizi"2 Print(Name.capitalize ())#Capitalize first letter3 Print(Name.count ("I"))4 Print(Name.center (50,"-"))#print a total of 50 characters, not enough for "-" completion, name in the middle5 6 Print(Name.endswith ("Zi"))#you can tell what the ending is.7 " "8 name = "Xiao\tlaizi"9 Print (Name.expandtabs (tabsize=30))Ten " " One Print(Name.find ("Lai")) A Print(Name[name.find ("Lai"): 8])#strings can also be sliced

1info ="My name is {name} and I am {year} old!"2 Print(Info.format (name ="Xiaolaizi", year = 23))#formatted output3 Print(Info.format_map ({'name':"Xiaolaizi",' Year': 23}))#Format_map in dictionary format

info ="My name is {name} and I am {year} old!"a="Xiaolaizi"Print('AB4'. Isalnum ())#true is a letter or number is truePrint('ab4\f'. Isalnum ())#false contains special characters as falsePrint('AbM'. Isalpha ())#to judge the pure letter as true, including the casePrint('ox1a'. Isdecimal ())#Judging whether the decimal number or judging is not a decimal, I don't knowPrint('123'. IsDigit ())#Judging is not an integerPrint(A.isidentifier ())#the judgment is not a valid identifier (variable name)Print("Small". Isidentifier ())Print(A.islower ())#Judging is not lowercasePrint(A.isnumeric ())#similar to isdigit basic noPrint(" ". Isspace ())#Judging is not a spacePrint("My Name". Istitle ())#determine if the title (the first letter of each word is capitalized) TruePrint("My name". Istitle ())#FalsePrint("My Name". Isprintable ())#determine if a printable #tty file is not printable and seldom usedPrint("My Name". Isupper ())#judge whether all uppercase

View Code

"I" begins with:

info = "My name is {name} and I am {year} old!"
a = "Xiaolaizi"
print (' Ab4 '. Isalnum ()) #True is a letter or a number is true
print (' ab4\f '. Isalnum ()) #False containing special characters is false
print (' AbM '. Isalpha ()) # to judge the pure letter to be true, including case
print (' ox1a '. Isdecimal ()) #判断是不是十进制数 still judging is not a decimal, I don't know
print (' 123 '. IsDigit ()) #判断是不是整数
print (A.isidentifier ()) #判断是不是一个合法的标识符 (variable name)
Print ("small". Isidentifier ())
print (A.islower ()) #判断是不是小写
print (A.isnumeric ()) #类似于isdigit basic
print ("". Isspace ()) #判断是不是空格
print ("My Name". Istitle ()) #判断是不是标题 (capitalize the first letter of each word) True
print ("My name". Istitle ()) #False
Print ("My Name". isprintable ()) #判断是不是可打印的 #tty file is not printable and is seldom used
print ("My Name". Isupper ()) #判断是不是都大写

' J ' begins with:

Print('+'. Join (['1','2','3']))#Connect with +Print("'. Join (['Xiao','Lai','Zi'])) name="Xiaolaizi"Print(Name.ljust (25,'*'))#xiaolaizi**************** left to * replenish enough 30Print(Name.center (25,'*'))#********xiaolaizi********Print(Name.rjust (25,'*'))#****************xiaolaizi RightPrint('XIAO'. Lower)#Change LowercasePrint('Xiaolaizi'. Upper ())#XiaolaiziPrint('Xiaolaizi'. Strip ())#remove spaces or enterPrint('\nxiaolaizi'. Lstrip ())#Remove the left (blank) carriage returnPrint('Xiaolaizi'. Rstrip ())#Remove the space on the right

Print("Xiaolaizi". replace ('x','X'))#Replace XiaolaiziPrint("Xiaolaizi". RFind ('x'))#start looking from you, get the subscript from the left numberPrint("1+2+3+4". Split ('+'))#with "" Split extraction, return a list [' 1 ', ' 2 ', ' 3 ', ' 4 ']Print("Xiao Lai zi". Split (' '))#returns a list [' Xiao ', ' lai ', ' zi ']Print("Xiao\nlai\nzi". Splitlines ())#by line break [' Xiao ', ' lai ', ' zi ']Print("Xiaolaizi". Swapcase ())#casing upside down XiaolaiziPrint("Xiao Lai zi". Title ())Print("Xiao Lai zi". Title ())

Python---tuples