Python File I/O: Find the longest words

Last update on April 22 2025 12:53:48 (UTC/GMT +8 hours)

8. Longest Words Finder

Write a python program to find the longest words.

Contain of text.txt

What is Python language?                                                
Python is a widely used high-level, general-purpose, interpreted, dynamic programming language.Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than possible in 
languages such as C++ or Java. 
Python supports multiple programming paradigms, including object-oriented, imperative and functional programming or procedural styles.It features a dynamic type system and automatic memory management and has a large and comprehensive standard library.The best way we learn anything is by practice and exercise questions. We  have started this section for those (beginner to intermediate) who are familiar with Python.

Sample Solution:-

Python Code:

def longest_word(filename):
    with open(filename, 'r') as infile:
              words = infile.read().split()
    max_len = len(max(words, key=len))
    return [word for word in words if len(word) == max_len]

print(longest_word('test.txt'))

Sample Output:

['w3resource.com.']

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to find the longest word in a text file and print its length and position.
Write a Python program to extract all words from a file and then identify the top three longest words.
Write a Python program to read a file and print all words that have the maximum length found in the file.
Write a Python program to find the longest word in a file and replace it with its uppercase version throughout the text.

Go to:

Previous: Write a Python program to read a file line by line store it into an array.
Next: Write a Python program to count the number of lines in a text file.

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.