Python String Methods
Python String Methods
Strings in Python are objects of the str data type, and they have a wide range of methods that allow you to manipulate and work with text data. Python has a couple of in-built methods which can be used to handle operations on string. Each method on a string does not alter the original string; instead, it returns a new string with the modified characteristics.
Python String Methods
Some commonly used methods of string in Python:
- isalpha()
- isdigit()
- split()
- replace()
- upper()
Strings are highly versatile, and these methods allow you to perform a wide range of operations on them to manipulate and extract information from text data.
| Method | Description | Example |
|---|---|---|
| capitalize() | returns a string copy with the first letter in uppercase |
>>> text="hello" >>> text.capitalize() 'Hello' |
| casefold() | returns a string copy with the all letter in lowercase |
>>> text="HELLO" >>> text.casefold() 'hello' |
| center() | returns a centered string copy |
>>> text="HELLO" >>> text.center(10) ' HELLO ' |
| count() | returns number of occurences of a specific value in the given string |
>>> text="HELLO" >>> text.count('L') 2 |
| encode() | returns encoded version of the string |
>>> text="HELLO" >>> text.encode() b'HELLO' |
| endswith() | returns True if the given string ends with given value else returns False |
>>> text="HELLO" >>> text.endswith('O') True |
| find() | returns 0 if the given sub-string is present else returns -1 |
>>> text="HELLO" >>> text.find('E') 0 |
| index() | returns the index of the element in the string, this method throws exception if the element is not present in the string. |
>>> text="HELLO" >>> text.index('E') 1 |
| isalnum() | returns True if the given string contains only alpha-numeric values |
>>> text="HELLO" >>> text.isalnum() True |
| isalpha() | returns True if string contains only alphabets |
>>> text="HELLO" >>> text.isalpha() True |
| isdigit() | returns True if the string contains only digits else returns False |
>>> text="HELLO" >>> text.isdigit() False |
| isidentifier() | returns True if the string only contains alphanumeric letters (a-z) and (0-9), or underscores (_). A valid identifier cannot start with a number, or contain any spaces. |
>>> text="HELLO" >>> text.isidentifier() True |
| islower() | returns True if the string contains all the characters are in lowercase |
>>> text="hello1" >>> text.islower() True |
| isnumeric() | returns True if all the characters in the string are numrical else returns False |
>>> text="HELLO" >>> text.isnumeric() False |
| isspace() | returns True if the string contains whitespaces only |
>>> text="hello1" >>> text.isspace() False |
| isupper() | returns True if the string contains all the characters are in uppercase |
>>> text="HELLO1" >>> text.isupper() True |
| lower() | returns a copy of string with all characters in lowercase |
>>> text="HELLO" >>> text.lower() 'hello' |
| partition() | returns a tuple with 3 strings partitioned by the argument |
>>> text="HELLO" >>> text.partition('L') ('HE','L','LO') |
| replace() | returns a copy of string with a specific value replaced by another given value |
>>> text="HELLO" >>> text.replace("L","l") 'HEllO' |
| split() | returns a list of strings splited by whitespaces by default if no character is passed as arguments |
>>> text="Hello Prepsters! Welcome to Python Tutorials " >>> text.split() ['Hello','Prepsters!','Welcome,'to','the','Python','Tutorials'] |
| upper() | returns a copy of string with all characters in uppercase |
>>> text="hello" >>> text.upper() 'HELLO' |
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