Some of the string methods are covered in the set 3 below
String Methods Part- 1
More methods are discussed in this article
1. len() :- This function returns the length of the string.
2. count(“string”, beg, end) :- This function counts the occurrence of mentioned substring in whole string. This function takes 3 arguments, substring, beginning position( by default 0) and end position(by default string length).
# Python code to demonstrate working of # len() and count() str = "neveropen is for Lazyroar" # Printing length of string using len() print (" The length of string is : ", len(str)); # Printing occurrence of "Lazyroar" in string # Prints 2 as it only checks till 15th element print (" Number of appearance of ""Lazyroar"" is : ",end="") print (str.count("Lazyroar",0,15)) |
Output:
The length of string is : 26 Number of appearance of Lazyroar is : 2
3. center() :- This function is used to surround the string with a character repeated both sides of string multiple times. By default the character is a space. Takes 2 arguments, length of string and the character.
4. ljust() :- This function returns the original string shifted to left that has a character at its right. It left adjusts the string. By default the character is space. It also takes two arguments, length of string and the character.
5. rjust() :- This function returns the original string shifted to right that has a character at its left. It right adjusts the string. By default the character is space. It also takes two arguments, length of string and the character.
# Python code to demonstrate working of # center(), ljust() and rjust() str = "neveropen" # Printing the string after centering with '-' print ("The string after centering with '-' is : ",end="") print ( str.center(20,'-')) # Printing the string after ljust() print ("The string after ljust is : ",end="") print ( str.ljust(20,'-')) # Printing the string after rjust() print ("The string after rjust is : ",end="") print ( str.rjust(20,'-')) |
Output:
The string after centering with '-' is : ---neveropen---- The string after ljust is : neveropen------- The string after rjust is : -------neveropen
6. isalpha() :- This function returns true when all the characters in the string are alphabets else returns false.
7. isalnum() :- This function returns true when all the characters in the string are combination of numbers and/or alphabets else returns false.
8. isspace() :- This function returns true when all the characters in the string are spaces else returns false.
# Python code to demonstrate working of # isalpha(), isalnum(), isspace() str = "neveropen"str1 = "123" # Checking if str has all alphabets if (str.isalpha()): print ("All characters are alphabets in str") else : print ("All characters are not alphabets in str") # Checking if str1 has all numbers if (str1.isalnum()): print ("All characters are numbers in str1") else : print ("All characters are not numbers in str1") # Checking if str1 has all spaces if (str1.isspace()): print ("All characters are spaces in str1") else : print ("All characters are not spaces in str1") |
Output:
All characters are alphabets in str All characters are numbers in str1 All characters are not spaces in str1
9. join() :- This function is used to join a sequence of strings mentioned in its arguments with the string.
# Python code to demonstrate working of # join() str = "_"str1 = ( "Lazyroar", "for", "Lazyroar" ) # using join() to join sequence str1 with str print ("The string after joining is : ", end="") print ( str.join(str1)) |
Output:
The string after joining is : Lazyroar_for_Lazyroar
