How to Extract the Last Word from Each Row of a Pyramid in Python

What will you learn?

By diving into this tutorial, you will master the art of extracting the last word from every row of a pyramid structure using Python. This hands-on guide will enhance your skills in string manipulation and regular expressions.

Introduction to Problem and Solution

Embark on a thrilling challenge where you unravel the mystery of extracting the final word from each row of a pyramid. The task involves dissecting text into distinct rows and pinpointing the last word in every row. To conquer this quest, we leverage Python’s robust string manipulation features alongside regular expressions for precise extraction.


# Import necessary libraries 
import re

# Sample pyramid text data
pyramid_text = """
I am a python developer working on interesting projects.
This is an example of a pyramid text.
Python programming language is versatile and powerful.

# Extract last words from each row of the pyramid text
last_words = [re.findall(r'\b\w+\b', line)[-1] for line in pyramid_text.split('\n') if line.strip()]

# Display extracted last words
for word in last_words:

# Copyright PHD

Note: The above code snippet efficiently captures and showcases the final words from each non-empty line within the provided pyramid_text.


To crack this puzzle, we begin by segmenting the input text into individual lines using .split(‘\n’). Subsequently, for each non-empty line, we employ regular expressions (re) with re.findall() to identify all words (\b\w+\b), selecting only the ultimate word [-1] as our output. Finally, these extracted last words are exhibited sequentially.

    How does re.findall(r’\b\w+\b’, line) function?

    The re.findall() function paired with \b\w+\b pattern scans for complete words within a string (line). Here, \b signifies a word boundary while \w+ matches one or more alphanumeric characters. This aids in efficient extraction of individual words.

    Can I customize the regular expression pattern based on specific criteria?

    Absolutely! You have the flexibility to tailor regex patterns according to your needs. For instance, you can adjust patterns to accommodate diverse definitions of what constitutes a “word.”

    What occurs when encountering an empty line amidst rows?

    Empty lines (rows) are disregarded due to .strip() method usage before further processing. This ensures that solely non-empty lines contribute towards extracting and displaying final results.

    Are there alternative methods beyond regular expressions for achieving similar outcomes?

    While regular expressions offer versatility and potency in pattern matching tasks like these, alternatives such as manual splitting based on spaces or punctuation could be employed depending on particular scenarios.

    How efficient is this solution with extensive volumes of text data?

    This solution capitalizes on Python’s intrinsic string manipulation capabilities coupled with regex functionalities. By implementing optimization techniques like reducing unnecessary computations and adept memory management practices, it can effectively handle substantial datasets.

    Can I expand this solution to cater to additional processing requirements besides just extracting final words?

    Certainly! Depending on your requisites, you can extend this solution by integrating more advanced analysis or text processing tasks post-extraction of final words at various levels.


    In conclusion – Unveil the intricacies behind extracting ultimate words from rows within a ‘pyramid’ configuration through Python´┐Żs dynamic string manipulation techniques. Delve deeper into exploring enhanced functionalities or adaptations tailored to suit your distinctive project prerequisites!

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