Example of string manipulation in Python3

Example of string manipulation in Python3

#-*-Coding:utf-8-*-
str = ' ABCDEDEDEDEDEFG '

#根据索引获取数据, 0 View first character, 1 view first character starting from right
Print (Str[0])
Print (Str[-1])

#字符串截取/Slice
Print (str[2:]) # CDEDEDEDEDEFG, starting with a character index of 2 to intercept until the end
Print (Str[1:3]) # BC, starting with a character index of 1 and intercepting it to 3-1 positions, not including the 3 position character
Print (Str[:3]) # ABC, truncated from scratch to 3-1 position, without 3 position character
Print (Str[0:6:2]) # Ace, starting with a character index of 0 to intercept to 6-1 position, does not contain 6 position character, slice step is 2, every two characters intercept a
Print (Str[::-1]) # GFEDEDEDEDEDCBA, string flashback output

#使用index获取字符所在索引
Print (Str.index (' C '))

#查找S. Find (sub[, start[, end]) int can search for strings, search within range of start----end slices
Print (Str.find (' F '))
Print (Str.find (' de ', 6,9))

# strip can delete spaces at the beginning and end of a string, and the middle content will not be deleted
f = ' JJ ll '
Print (F.strip ())

#获取字符串的长度
Print (len (str))

#替换S. Replace (old, new[, Count]), str old= modified characters, string new= modified characters, strings, number of times count= replaced
Print (Str.replace (' d ', ' d ')) #返回: ' ABCDEDEDEDEDEFG '
Print (Str.replace (' d ', ' d ', 2)) #返回: ' ABCDEDEDEDEDEFG ' sets the count parameter to only modify two

# S.center (width[, Fillchar]) string-centric, left and right supplementary characters, Width = set widths, fillchar= complement characters
Print (Str.center, '-') #返回: "--ABCDEDEDEDEDEFG---"

Returns True #isnumeric string if it is a pure number
s = ' 123 '
Print (s.isnumeric) #true
Print (Str.isnumeric ()) #Flase

# S.split (Sep=none, maxsplit=-1), List of strings
A = ' Abcebcegbs '
b = A.split (' B ')
Print (b) # returns the list: [' A ', ' CE ', ' ceg ', ' s '], with the character ' B ' as the split symbol, generate the list

#S. Join (iterable)-> str Returns a string that is a string of iterable. The delimiter between elements is S.
Print (' B '. Join (b)) #返回一个字符串 Abcebcegbs

#S. Capitalize ()-> STR Returns an uppercase S, which is the first character, with uppercase letters and other lowercase letters.
Print (Str.capitalize ()) #返回: ABCDEDEDEDEDEFG

Example of string manipulation in Python3