bytes vs bytearray – key differences Dry Run in PYTHON

bytes vs bytearray – key differences 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.

bytes vs bytearray – key differences Program Code

# bytes vs bytearray
data_bytes = b"python"
data_ba = bytearray(b"python")

print("bytes:", data_bytes)
print("bytearray:", data_ba)

# bytes: immutable → cannot modify
try:
    data_bytes[0] = 80
except TypeError as e:
    print("bytes error:", e)

# bytearray: mutable → can modify
data_ba[0] = 80   # 'p' → 'P'
print("bytearray after change:", data_ba)

# both support same methods (find, count, etc.)
print("find 't':", data_bytes.find(b't'))  # 2
print("count 'n':", data_ba.count(b'n'))   # 1

View the complete Bytes programs page.