Python String Methods

A string is a series of Unicode characters surrounded by quotation marks. A character is nothing more than a symbol. Computers do not work with characters; instead, they work with numbers (binary). Even though you see characters on your screen, they are saved and modified inside as a series of 0s and 1s. The most common conversion mechanisms used by programming languages are ASCII and Unicode. This article focuses on various Python string methods that are being used for string handling and manipulation.

Creating Python Strings

Strings are formed by enclosing characters in single or double quotations. In Python, triple quotes can also be used to denote multiline texts and docstrings.

Example

Copy Code

                    
# Python program to create a string
# using single-quotation
txt = 'Hello World!'
print('Created string:', txt)

# using double-quotation
txt = "Good Morning Students"
print('Created string:', txt)

# using triple-quotes
txt = '''I love Python Programming'''
print('Created string:', txt)

Output

Created string: Hello World! Created string: Good Morning Students Created string: I love Python Programming

Python, like the set, list, and dictionary class methods, has a plethora of built-in functions for manipulating strings. Python String Methods are a set of built-in methods that you can use on strings for data handling and manipulation. Because Python Strings are immutable, all of these functions return a new string while leaving the previous string untouched and unchanged.

Method	Description
Python String capitalize()	Returns a string with the first character converted to Uppercase while other letters to lowercase
Python String casefold()	Returns a string converting a wider range of characters to lowercase
Python String center()	Pads the input string to the center with the specified character
Python String count()	Returns the number of occurrences of a substring from the original string
Python String encode()	Returns an encoded string with the specified encoding standard
Python String endswith()	Returns value TRUE if the string ends with the specified suffix
Python String expandtabs()	Replaces tab characters \t with spaces
Python String find()	Returns the index value of the first occurrence of the substring
Python String format()	Formats the string by converting it into a more representative output format
Python String format_map()	Formats the string values using a dictionary
Python String index()	Returns the index value of the substring specified
Python String isalnum()	Checks if all characters are alphanumeric
Python String isalpha()	Checks if all characters are alphabets
Python String isdecimal()	Checks if all characters are decimal values
Python String isdigit()	Checks if all characters are digits or not
Python String isidentifier()	Checks if all characters are valid identifiers
Python String islower()	Checks if all characters in a string are lowercased
Python String isnumeric()	Checks if all characters are numeric
Python String isprintable()	Checks if all characters are printable
Python String isspace()	Checks if all characters contain whitespaces
Python String istitle()	Returns TRUE if the string is a title cased string
Python String issuper()	Returns TRUE if all the characters in the string are uppercase
Python String join()	Returns a concatenated string
Python String ljust()	Returns a left-justified string as per the width specified
Python String lower()	Converts all the characters of the string to lowercase
Python String lstrip()	Returns a string with the leading characters removed
Python String maketrans()	Create a mapping table and returns this translation table
Python String partition()	Splits the string at the first occurrence of the separator
Python String replace()	Replaces all the occurrences of the specified substring with another substring
Python String rfind()	Returns the highest index value of the substring
Python String rindex()	Returns the highest index value of the substring inside the string
Python String rjust()	Returns a right-justified string as per the width specified
Python String rpartition()	Splits the string into 3 different parts and returns a tuple
Python String rsplit()	Splits the string from right
Python String rstrip()	Returns a string with all the trailing characters removed
Python String split()	Splits the string from the specified separator and returns a list
Python String splitlines()	Splits the string at line boundaries
Python String startswith()	Returns value TRUE if the string starts with the specified prefix
Python String strip()	Removes both the leading and trailing characters of a string
Python String swapcase()	Swaps uppercase characters to lowercase and vice versa
Python String title()	Converts the string to a tile cased string
Python String translate()	Modifies the string according to the translation table
Python String upper()	Converts all the characters of the string to uppercase
Python String zfill()	Returns a copy of the string with ‘0’ padded to the left of the string

Frequently Asked Questions

Q1. What are Python string methods?

A string is a series of Unicode characters surrounded by quotation marks. In Python, strings can be used to manage textual data. Strings in Python are immutable sequences of Unicode points. To perform certain operations and functionalities on strings, Python provides us with a wide range of string manipulation methods.

Python, like the set, list, and dictionary class methods, has a plethora of built-in functions for manipulating strings. Because Python Strings are immutable, all of these functions return a new string while leaving the previous string untouched and unchanged.

Q2. Does == work for strings in Python?

When working with strings, you may wish to check to determine if one string is equivalent to another. Python provides us with various string comparison operators, but one of the most commonly used is the ‘==’ equality operator. If the strings are equal, Boolean value TRUE is returned, else FALSE.

Example

Copy Code

                    
str1 = 'Hello'
str2 = 'hello'
print('Are the strings equal:', str1 == str2)

str1 = 'Python'
str2 = 'Python'
print('Are the strings equal:', str1 == str2)

Output