How to check if string or a substring of string ends with suffix in Python?

To check if a string or a substring of a string ends with a suffix in Python, there are several ways to accomplish this. Here are some examples:

Using the endswith() Method

The endswith() method checks if the string ends with a specified suffix and returns a boolean value. To check if a substring of a string ends with a suffix, you can use string slicing to get the substring and then apply endswith() on it.

Example

string = "hello world"
suffix = "world"
if string.endswith(suffix):
    print("String ends with suffix")

Output

String ends with suffix

Using the re Module

The re module provides support for regular expressions in Python. You can use regular expressions to match a pattern at the end of a string. Here's an example:

Example

import re
string = "hello world"
suffix = "world"
pattern = re.compile(suffix + "$")
if pattern.search(string):
    print("String ends with suffix")

Output

String ends with suffix

Using String Slicing

You can also use string slicing to check if a string or substring of a string ends with a suffix.

Example

string = "hello world"
suffix = "world"
if string[-len(suffix):] == suffix:
    print("String ends with suffix")

Output

String ends with suffix

To check if a string or a substring of a string ends with a specific suffix in Python, you can use the str.endswith() method. This method returns True if the string or substring ends with the specified suffix, and False otherwise.

Example

In this example, we define a string my_string and check if it ends with the specified suffix "aboard!". Since it does end with this suffix, the program prints "The string ends with 'aboard!'".

# Define a string
my_string = "Welcome, aboard!"

# Check if the string ends with "world!"
if my_string.endswith("aboard!"):
    print("The string ends with 'aboard!'")
else:
    print("The string does not end with 'aboard!'")

Output

The string ends with 'aboard!'

Example

In this example, we define a list of suffixes and a string my_string. We then use a generator expression with the any() function to check if my_string ends with any of the suffixes in suffixes. Since my_string ends with the suffix ".jpg", which is one of the suffixes in the list, the program prints "The string ends with one of the suffixes in the list".

# Define a list of suffixes
suffixes = [".jpg", ".png", ".gif"]
# Define a string
my_string = "picture.jpg"
# Check if the string ends with any of the suffixes
if any(my_string.endswith(suffix) for suffix in suffixes):
    print("The string ends with one of the suffixes in the list")
else:
    print("The string does not end with any of the suffixes in the list")

Output

The string ends with one of the suffixes in the list

Example

In this example, we check if the string my_string ends with the specified suffix "world". However, since my_string actually ends with "world!", the program prints "The string does not end with 'world'".

# Define a string
my_string = "Hello, world!"
# Check if the string ends with "world"
if my_string.endswith("world"):
    print("The string ends with 'world'")
else:
    print("The string does not end with 'world'")

Output

The string does not end with 'world'

Example

In this example, we check if the string my_string ends with any of the suffixes in the suffixes list. However, since my_string ends with ".txt", which is not one of the suffixes in the list, the program prints "The string does not end with any of the suffixes in the list".

# Define a list of suffixes
suffixes = [".jpg", ".png", ".gif"]
# Define a string
my_string = "document.txt"

# Check if the string ends with any of the suffixes
if any(my_string.endswith(suffix) for suffix in suffixes):
    print("The string ends with one of the suffixes in the list")
else:
    print("The string does not end with any of the suffixes in the list")

Output

The string does not end with any of the suffixes in the list