String Functions

Python string functions:

Python has a set of built-in methods that you can use on strings.

All string methods returns new values. They do not change the original string.

1.capitalize():Capitalizes the first character of the string.

name = "pritha" print(name.capitalize()) 

Pritha 

2.casefold():Converts string into lower case

name = "PRITHA" print(name.casefold()) 

pritha 

3.center():Returns a centered string

name = "pritha" print(name.center(10,"-")) 

--pritha-- 

4.count():Returns the number of times a specified value occurs in a string

name = "lakshmipritha" print(name.count('a')) 

2 

5.encode():Returns an encoded version of the string

name = "lakshmipritha" print(name.encode()) 

b'lakshmipritha' 

6.endswith():Returns true if the string ends with the specified value

name = "lakshmi pritha" print(name.endswith('pritha')) 

True 

7.find():Searches the string for a specified value and returns the position of where it was found

name = "lakshmi pritha" print(name.find('pritha')) 

8 

8.format():Formats specified values in a string

name = "Hello, {}. Welcome to {}." print(name.format("Pritha", "Python")) 

Hello, Pritha. Welcome to Python. 

9.format_map():Formats specified values in a string

text = "My name is {name} and I am {age} years old." data = {"name": "Pritha", "age":30 } print(text.format_map(data)) 

My name is Pritha and I am 30 years old. 

10.index():Searches the string for a specified value and returns the position of where it was found

name= "lakshmi pritha" position = name.index("pritha") print(position) 

8 

11.isalnum():Returns True if all characters in the string are alphanumeric

12.isalpha():Returns True if all characters in the string are in the alphabet

13.isascii():Returns True if all characters in the string are ascii characters

14.isdecimal():Returns True if all characters in the string are decimals

15.isdigit():Returns True if all characters in the string are digits

16.isidentifier():Returns True if the string is an identifier

17.islower():Returns True if all characters in the string are lower case

18.isnumeric():Returns True if all characters in the string are numeric

19.isprintable():Returns True if all characters in the string are printable

20.isspace():Returns True if all characters in the string are whitespaces

21.istitle():Returns True if the string follows the rules of a title

22.isupper():Returns True if all characters in the string are upper case

name = "pritha" print(name.isalnum()) print(name.isalpha()) print(name.isascii()) print(name.isdecimal()) print(name.isdigit()) print(name.isidentifier()) print(name.islower()) print(name.isnumeric()) print(name.isprintable()) print(name.isspace()) print(name.istitle()) print(name.isupper()) 

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