Where Does Python Look for Modules? (sys.path) Dry Run in PYTHON

Where Does Python Look for Modules? (sys.path) is an interactive PYTHON dry run visualizer from the Modules 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.

Where Does Python Look for Modules? (sys.path) Program Code

import sys

# These labels explain the main locations in sys.path
search_locations = [
    "Current program folder",
    "Python standard library",
    "Installed packages folder"
]

print("Python searches these locations in order:")
for position, folder in enumerate(search_locations, 1):
    print(f"{position}. {folder}")

# Add a new folder to the search path
my_folder = "C:/my_custom_modules"
sys.path.append(my_folder)
print(f"\nAdded: {my_folder}")

# Now Python can find modules saved in that folder

View the complete Modules programs page.