Combine map() and filter() together Dry Run in PYTHON

Combine map() and filter() together is an interactive PYTHON dry run visualizer from the Special programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Combine map() and filter() together Program Code

numbers = list(range(1, 21))

# Pipeline: filter even numbers, then square them
result = list(map(lambda x: x ** 2, filter(lambda x: x % 2 == 0, numbers)))

print(f"Original: {numbers}")
print(f"Even numbers squared: {result}")

# Using list comprehension (more readable equivalent)
result2 = [x**2 for x in numbers if x % 2 == 0]
print(f"Same result (comprehension): {result2}")

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