Python String Methods
Python string is a sequence of Unicode characters that is enclosed in the quotations marks. In this article, we will discuss the in-built function i.e. the functions provided by the Python to operate on strings.
Note: Every string method does not change the original string instead returns a new string with the changed attributes.
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning - Basic Level Course
Case Changing of Strings
The below functions are used to change the case of the strings.
- lower(): Converts all uppercase characters in a string into lowercase
- upper(): Converts all lowercase characters in a string into uppercase
- title(): Convert string to title case
Example: Changing the case of Python Strings.
Python3
# Python3 program to show the# working of upper() functiontext = 'geeKs For geEkS' # upper() function to convert# string to upper_caseprint("\nConverted String:")print(text.upper()) # lower() function to convert# string to upper_caseprint("\nConverted String:")print(text.lower()) # rpartition breaks the stringprint("\nConverted String:")print(text.title()) # original string never changesprint("\nOriginal String")print(text) |
Output
Converted String: GEEKS FOR GEEKS Converted String: geeks for geeks Converted String: Geeks For Geeks Original String geeKs For geEkS
Table of Python String Methods
| Function Name | Description |
|---|---|
| capitalize() | Converts the first character of the string to a capital (uppercase) letter |
| casefold() | Implements caseless string matching |
| center() | Pad the string with the specified character. |
| count() | Returns the number of occurrences of a substring in the string. |
| encode() | Encodes strings with the specified encoded scheme |
| endswith() | Returns “True” if a string ends with the given suffix |
| expandtabs() | Specifies the amount of space to be substituted with the “\t” symbol in the string |
| find() | Returns the lowest index of the substring if it is found |
| format() | Formats the string for printing it to console |
| format_map() | Formats specified values in a string using a dictionary |
| index() | Returns the position of the first occurrence of a substring in a string |
| isalnum() | Checks whether all the characters in a given string is alphanumeric or not |
| isalpha() | Returns “True” if all characters in the string are alphabets |
| isdecimal() | Returns true if all characters in a string are decimal |
| isdigit() | Returns “True” if all characters in the string are digits |
| isidentifier() | Check whether a string is a valid identifier or not |
| islower() | Checks if all characters in the string are lowercase |
| isnumeric() | Returns “True” if all characters in the string are numeric characters |
| isprintable() | Returns “True” if all characters in the string are printable or the string is empty |
| isspace() | Returns “True” if all characters in the string are whitespace characters |
| istitle() | Returns “True” if the string is a title cased string |
| isupper() | Checks if all characters in the string are uppercase |
| join() | Returns a concatenated String |
| ljust() | Left aligns the string according to the width specified |
| lower() | Converts all uppercase characters in a string into lowercase |
| lstrip() | Returns the string with leading characters removed |
| maketrans() | Returns a translation table |
| partition() | Splits the string at the first occurrence of the separator |
| replace() | Replaces all occurrences of a substring with another substring |
| rfind() | Returns the highest index of the substring |
| rindex() | Returns the highest index of the substring inside the string |
| rjust() | Right aligns the string according to the width specified |
| rpartition() | Split the given string into three parts |
| rsplit() | Split the string from the right by the specified separator |
| rstrip() | Removes trailing characters |
| splitlines() | Split the lines at line boundaries |
| startswith() | Returns “True” if a string starts with the given prefix |
| strip() | Returns the string with both leading and trailing characters |
| swapcase() | Converts all uppercase characters to lowercase and vice versa |
| title() | Convert string to title case |
| translate() | Modify string according to given translation mappings |
| upper() | Converts all lowercase characters in a string into uppercase |
| zfill() | Returns a copy of the string with ‘0’ characters padded to the left side of the string |
Note: For more information about Python Strings, refer to Python String Tutorial.
