Reference library

Lists & loops

Iterate, transform, and combine sequences with readable loop patterns.

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Lists & loops easy

How to Process Text with Lists and Loops in Python

Iterate over a list of text lines to count words, show uppercase versions, and report character counts per line.

lists loops enumerate
Python 
# text_processor.py

def process_text(lines):
    """Count words, show uppercase, and count characters per line."""
    total_words = 0
    print("Line-by-line analysis:")
    for i, line in enumerate(lines, start=1):
        words = line.split()
        total_words += len(words)
        print(f"  Line {i}: {len(words…
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