Copy one list into another Dry Run in PYTHON

Copy one list into another is an interactive PYTHON dry run visualizer from the Lists 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.

Copy one list into another Program Code

# Copy one list into another
original = [10, 20, 30, 40, 50]
print("Original:", original)

# Method 1: Using copy() method
copy1 = original.copy()
print("copy():", copy1)

# Method 2: Using list() constructor
copy2 = list(original)
print("list():", copy2)

# Method 3: Slicing
copy3 = original[:]
print("Slicing [:]:", copy3)

# Method 4: Manual loop
copy4 = []
for item in original:
    copy4.append(item)
print("Manual loop:", copy4)

# Verify independent copy
copy1[0] = 999
print(f"\nAfter modifying copy: original[0]={original[0]}, copy[0]={copy1[0]}")

View the complete Lists programs page.