Quick Answer

Resolve failures when importing Python modules.

Understanding the Issue

ImportError indicates Python cannot locate the requested module. Common causes include: misspelled names, missing __init__.py files, incorrect PYTHONPATH configuration, or virtual environment issues. The error message typically shows the exact path Python searched.

The Problem

This code demonstrates the issue:

Python Error 
import non_existent_module  # Fails
from subpackage import missing_name  # Fails

The Solution

Here's the corrected code:

Python Fixed 
# Solution 1: Verify installation
# Run: pip show package_name

# Solution 2: Check import path
import sys
print(sys.path)  # Debug module search path

Key Takeaways

Use virtual environments and verify package installations.