#!/usr/local/bin/python3
# -*- coding:utf-8 -*-
name="my wife is mahongyan"
#----------Capitalized----------
#print(name.capitalize())
#----------Character Statistics----------
#print(name.count('m'))
#----------Character Beautiful Printing----------
#print(name.center(50,'-')) #Print a total of 50 characters, if not enough, use '-' on both sides of the string to make up
#---------- Determine what the string ends with ----------
#print(name.endswith('yan')) #Determine whether the string ends with 'yan', if it is, return True
#----------tab key conversion----------
#name1="my \twife is mahongyan"
#print(name1.expandtabs(tabsize=30)) #Convert the tab key in the string to a specified number of spaces
#----------Remove subscript----------
'''print(name.find('wife')) #Get the subscript of the first character in the string 'wife' in the string
#Note: 1. Counting from 0, a space bar is also counted as one
# 2. If the string contains two 'wife', return the subscript value in the first 'wife'
print(name[name.find('wife'):7]) #Slice operation, start slicing from the subscript where 'w' is located, until 'e', that is, take out "wife"'''
#----------format----------
'''name2="my wife is {name} and she is {age} years old"
print(name2.format(name='mahongyan',age=26))
print(name2.format_map({'name':'mahongyan','age':26})) #The parameter is the dictionary format'''
#----------Determine whether the string is pure Arabic numerals + characters------------
#print(name.isalnum()) #Note: It is 'pure' Arabic numbers and characters, if there are spaces or other special characters in the string, it will return False
#----------Determine whether the string is a pure English character----------
#print(name.isalpha()) #If the string contains numbers or other non-English characters, return False
#----------Determine whether the string is a decimal number------------
'''name3="0100"
print(name3.isdecimal()) #Note: If the string is a binary number, it also returns True'''
#----------Determine whether the string is a valid identifier (variable name)----------
'''name4="_1x"
print (name4.isidentifier ()) '' '
#----------Determine whether the string is an integer type----------
'''name5="22"
print(name5.isdigit())'''
#----------Determine if the string is a lowercase letter------------
#print(name.islower()) #The string can contain numbers or special characters, that is, only determine whether the letters contained in the string are lowercase
#----------Determine if the string is an uppercase letter----------
#print(name.isupper()) #The string can contain numbers or special characters, that is, only determine whether the letters contained in the string are uppercase
#----------Determine if string is a 'pure' number----------
#print(name.isnumeric()) #There is no decimal point, it is not much different from isdigit
#----------Determine if the string is a space------------
'''name6=' '
print(name6.isspace()) #One to n spaces all return True'''
#----------Determine whether the string is in title format------------
'''name7='My Wife Is Mahongyan'
print(name7.istitle()) #That is, the first letter of each word is capital '''
#---------- Convert string to title format ----------
#print(name.title())
#----------join usage----------
#print('*'.join(['a','b','c'])) #Not yet understood
#----------The end of the string is filled and printed ----------
#print(name.ljust(50,"-")) #Make the length of the output string 50, if the length of the string is not enough, pad '-' at the end
#----------The header of the string is filled and printed ----------
#print(name.rjust(50,"-")) #Make the length of the output string 50, if the length of the string is not enough, fill in the header with '-'
#----------Convert letters in string to uppercase/lowercase----------
'''print(name.upper()) #Only convert all letters
print(name.lower())'''
#----------Remove spaces or carriage returns from the left and right sides of the string----------
'''print(" \nabc".lstrip()) #Remove the left side
print("abc \n".rstrip()) #Remove the right side
print(" \nabc \n".strip())#Remove both sides '''
#----------Encryption 1----------
'''p=str.maketrans("abcdefg","1234567") #将"abcdefg"对应成"!@#$%^&"
print("bad".translate(p)) #Pass the password rule p into the translate function, and then convert "bad" into the encrypted string '''
#----------Encryption 2----------
#print(name.translate(str.maketrans("abcdefg","1234567"))) #The effect is the same as 1
#----------replace----------
'''print(name.replace('a','A')) #Replace all characters 'a' in the string with 'A'
print(name.replace('a','A',2)) #Replace the first two 'a' in the string with 'A' '''
#----------search----------
#print(name.rfind('y')) # Traverse the string from left to right and return the largest subscript of the character 'y' in the string
#----------Conversion list----------
'''print(name.split()) #Split the string by spaces and put it into a list in turn
print("1+2+3+4".split('+'))#Split the string according to the character 'y' and put it into a list in turn, but the character 'y' disappears
print("1\n2\n3\n4".splitlines())#Split the string according to the newline and put it into a list '''
#----------Find----------
'''print(name.startswith('my')) #Find if the string 'my' exists in the string, if it exists, return True
print(name.startswith('my',0,4)) #Search for the existence of the string 'my' in the subscript 0~4 of the string, if it exists, return True'''
#----------Letter case conversion----------
#print(name.swapcase()) #Convert uppercase letters in the string to lowercase, and lowercase letters to uppercase
#----------Hexadecimal padding----------
#print(name.zfill(30)) #Specify the length of the string as 30. If the length of the string is not enough, fill 0 at the beginning of the string; usually used for hexadecimal conversion