Mutable methods: append, extend, insert, pop, remove Dry Run in PYTHON

Mutable methods: append, extend, insert, pop, remove is an interactive PYTHON dry run visualizer from the Bytes 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.

Mutable methods: append, extend, insert, pop, remove Program Code

# bytearray mutable operations
ba = bytearray(b"abc")
print("initial:", ba)

ba.append(100)          # add byte 100 ('d')
print("append d:", ba)

ba.extend(b"efg")       # extend with bytes
print("extend efg:", ba)

ba.insert(1, 90)        # insert byte 90 ('Z') at index 1
print("insert Z:", ba)

popped = ba.pop(2)      # remove and return index 2
print("pop(2) →", popped, "after pop:", ba)

ba.remove(99)           # remove first byte with value 99 ('c')
print("remove 99 (c):", ba)

ba.reverse()
print("reverse:", ba)

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