Python string built-in function

Method	Describe
String.capitalize ()	Capitalize the first character of a string
String.center (width)	Returns the center of the original string and fills the new string with a space of length width
String.count (str, beg=0, End=len (String))	Returns the number of occurrences of STR in a string, if beg or end specifies that the number of STR occurrences in the specified range is returned
String.decode (encoding= ' UTF-8 ', errors= ' strict ')	Decodes a string in the encoded format specified by encoding, if an error defaults to a ValueError exception unless errors specifies ' ignore ' or ' replace '
String.encode (encoding= ' UTF-8 ', errors= ' strict ')	Encodes a string in the encoding format specified by encoding, if an error defaults to a ValueError exception unless errors specifies ' ignore ' or ' replace '
String.endswith (obj, beg=0, End=len (String))	Checks whether the string ends with obj, or returns False if beg or end specifies whether to end with obj in the specified range, or True if it is.
String.expandtabs (tabsize=8)	Turns the tab symbol in string strings to a space, and the default number of spaces Tabsize is 8.
String.find (str, beg=0, End=len (String))	Detects if STR is contained in a string, and if beg and end specify a range, the check is contained within the specified range, and returns 1 if the index value is returned.
String.index (str, beg=0, End=len (String))	Just like the Find () method, only if STR does not report an exception in string.
String.isalnum ()	If the string has at least one character and all characters are letters or numbers, return Return True, otherwise False
String.isalpha ()	Returns True if the string has at least one character and all characters are letters. otherwise returns False
String.isdecimal ()	Returns True if the string contains only a decimal number, otherwise False.
String.isdigit ()	Returns True if the string contains only a number, otherwise False.
String.islower ()	Returns True if the string contains at least one case-sensitive character, and all of these (case-sensitive) characters are lowercase, otherwise False
String.isnumeric ()	Returns True if the string contains only numeric characters, otherwise False
String.isspace ()	Returns True if the string contains only spaces, otherwise False is returned.
String.istitle ()	Returns True if string is heading (see Title ()), otherwise False
String.isupper ()	Returns True if the string contains at least one case-sensitive character, and all of these (case-sensitive) characters are uppercase, otherwise False
String.Join (seq)	Merges (concatenates) merges all the elements in the SEQ (the string representation) into a new string as a string delimiter
String.ljust (width)	Returns the left alignment of an original string and fills the new string with the width of length with a space
String.Lower ()	Converts all uppercase characters in a string to lowercase.
String.lstrip ()	Truncate the left space of a string
String.partition (str)	A bit like the combination of find () and split (), from the first position where Str appears, divide the string into a 3-element tuple (STRING_PRE_STR,STR,STRING_POST_STR), if string STR is not included in the STRING_PRE_STR = = string.
String.Replace (str1, str2, Num=string.count (STR1))	Replace the str1 in string with the str2, if NUM is specified, the replacement is no more than num times.
String.rfind (str, Beg=0,end=len (String))	Similar to the Find () function, it is just looking from the right.
String.rindex (str, Beg=0,end=len (String))	Similar to index (), but starting from the right.
String.rjust (width)	Returns the right alignment of the original string and fills the new string with the width of the length with a space
String.rpartition (str)	Similar to the partition () function, it is just looking from the right.
String.rstrip ()	Removes a space at the end of a string string.
String.Split (str= "", Num=string.count (str))	Slice string with a delimiter of STR, if NUM has a specified value, only the NUM substring is delimited
String.splitlines (Num=string.count (' \ n '))	Returns a list that contains rows as elements, separated by rows, and if num specifies that only num rows are sliced.
String.startswith (obj, Beg=0,end=len (string))	Checks whether the string starts with obj, returns True, or False. If beg and end specify a value, the check is within the specified range.
String.strip ([obj])	Execute Lstrip () and Rstrip () on string
String.swapcase ()	Flip the case in a string
String.title ()	A string that returns "header", meaning that all words start with uppercase and the remaining letters are lowercase (see istitle ())
String.translate (str, del= "")	Converts a string of characters according to the table given by STR, which contains 256 characters, The characters to filter out are placed in the Del parameter
String.upper ()	Convert lowercase letters in string to uppercase
String.zfill (width)	Returns a string of length width, the original string is right-aligned, and the front padding is 0

Python string built-in function