Python Road--str Type

functions defined within the STR type

• Capitalize: Capitalize the first letter, the remaining lowercase

  Function prototype: def capitalize (self)

  Usage:

  Str1.capitalize ()

• Casefold: Change All lowercase

  Function prototype: def casefold (self)

  Usage:

  Str1.casefold ()

• Center: Content Centered

  Function prototypes: Def center (self, width, fillchar=none)

  Usage:

  Str1.center (N,fill) #n表示总长度, fill indicates a filling symbol

• Count: Count the number of sub-sequences

  Function prototypes: def count (self, sub, Start=none, End=none)

  Usage:

  Str1.count (sub,m,n) Number of statistics sub in the #在 [m,n) interval

• Encode: encoding, for Unicode

  Function prototypes: Def encode (self, encoding= ' utf-8 ', errors= ' strict ')

• Endswitch: Determines whether to end with suffix, returns false or True

  Function prototypes: Def endswith (self, suffix, start=none, end=none) Usage:

  Str1.endswith ("suffix", m,n) #在 [m,n) interval to find out whether to end with suffix

• StartsWith: Determines whether to start with suffix, returns false or True

  Function prototypes: Def startswith (self, prefix, start=none, end=none) Usage:

  Str1.endswith ("prefix", m,n) #在 [m,n] interval to find out whether to start with prefix

• Expandtabs: Convert tab to space, default one tab to 8 spaces

  Function prototypes: Def expandtabs (self, tabsize=8)

  Usage:

  Str1.expandtabs ()

• Find: Find sub-sequence position, if not found, return-1

  Function prototypes: Def find (self, sub, Start=none, End=none)

  Usage:

  Str1.find (sub,m,n) #查找sub的位置并返回开始的值

• Format: string formatting, dynamic parameters

  Function prototypes: def format (self, *args, **kwargs) Usage:

  str1= "Hello {0}, hello {1}"

  Str1.format ("World", "Python")

• Index: Sub-sequence position, if not found, error

  Function prototypes: Def index (self, sub, Start=none, End=none)

  Usage:

  Str1.index (Sub,m,n)

• Isalnum: Whether it is a letter or a number

  Function prototype: def isalnum (self)

• Isalpha: Whether it is a letter

  Function prototype: def isalpha (self)

• IsDigit: Whether it is a number

  Function prototype: def isdigit (self)

• Islower: Lowercase

  Function prototype: def islower (self)

• Isspace: Detects whether a string consists of only spaces.

  Function prototype: def isspace (self)

• Istitle: Checks if all the words in the string are spelled with uppercase letters and the other letters are lowercase.

  Function prototype: def istitle (self)

• Isupper: Deciding whether to capitalize

  Function prototype: def isupper (self)

• Join: Connect

  Function prototypes: Def join (self, iterable)

  Usage:

  "Fill". Join (STR1) #用fill符号连接str1之间的字符

  For example:

  str1= "12345"

  "+". Join (STR1)

  Input as 1+2+3+4+5

• Ljust: Content left aligned, right filled with Fillchar

  Function prototypes: Def ljust (self, width, fillchar=none)

  Usage:

  Str1.ljust (M,fill) #m表示长度, fill represents the filled character

• Lower: Variable lowercase

  Function prototype: def lower (self)

  Usage:

  Str1.lower ()

• Upper: Variable Capitalization

  Function prototype: Def UPPER (self)

  Usage:

  Str1.upper ()

• Strip: Remove chars on both sides, default to Spaces

  Function prototypes: def strip (self, Chars=none)

  Usage:

  Str1.strip ("chars") #chars表示要移除的字符串

• Partition: Split into front and bottom three (left to right) with one rpartition right-to-left

  Function prototypes: Def partition (self, SEP)

  Usage: str1.partition (Sep) # Sep becomes part of Sep before and after it becomes a part

• Replace: Replacing

  Function prototypes: def replace (self, old, new, Count=none)

  Usage: str1.replace (sub1,sub2,n) #将sub1替换为sub2, replace n times, default replace All

• Split: Split, maxsplit up to several times

  Function prototypes: Def split (self, sep=none, maxsplit=-1)

  Usage:

  Str1.split (sep,m) # according to Sep division m times, without m words, have Sep split

• Splitlines: separated by rows (' \ r ', ' \ r \ n ', \ n '), returns a list containing the rows as elements, if the argument keepends is False, does not contain a newline character, and if true, the newline character is preserved.

  Function prototypes: Def splitlines (self, keepends=none)

  Usage: str1.splitlines ()

• Swapcase: Case Interchange

  Function prototype: def swapcase (self)

• Title: Change a string to a word beginning with uppercase, the other lowercase

  Function prototype: def title (self)

• Translate: conversion, you need to make a corresponding table, the last one represents the deletion of the character set

  Function prototypes: Def translate (self, table)

  Usage:

  Str1.translate (Trantab), but you need to use Maketrans first

  For example:

  "aeiou"outtab = "12345"trantab = temp.maketrans(intab, outtab)str = "this is string example....wow!!!"print(str.translate(trantab))#输出结果th3s 3s str3ng 2x1mpl2....w4w!!!

Python Road--str Type