Counter Addition and Subtraction Dry Run in PYTHON

Counter Addition and Subtraction is an interactive PYTHON dry run visualizer from the Collection 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.

Counter Addition and Subtraction Program Code

from collections import Counter

cart1 = Counter({"pen": 3, "book": 2})
cart2 = Counter({"pen": 1, "pencil": 4})

print("Total:", cart1 + cart2)
print("After removing:", cart1 - Counter({"pen": 1}))

View the complete Collection programs page.