Understanding Python's Global Interpreter Lock (GIL)

What is the Python Global Interpreter Lock (GIL)?

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Certificate of Achievement

This is to certify that

Anatol Kaczmarek

has successfully completed

Understanding Python's Global Interpreter Lock (GIL)

a course of study offered by Real Python (realpython.com), an online learning platform and expert community for Python software developers.

Completion Date: July 28, 2026

Verification ID: b26ab9c0-60c6-4d1e-b389-14e5edca816b

Course Description

Skill level: advanced

Python's Global Interpreter Lock or GIL, in simple words, is a mutex (or a lock) that allows only one thread to hold the control of the Python interpreter at any one time. In this video course you'll learn how the GIL affects the performance of your Python programs.

Understanding Python's Global Interpreter Lock (GIL)

1. Understanding Python's Global Interpreter Lock (Overview)

2. Understanding Concurrency and Processes

3. Threading and Multitasking

4. Solving Race Conditions

5. Exercise: Make a Bank Account Thread-Safe

6. Understanding the GIL

7. Changing Interpreters

8. Removing the GIL

9. Understanding Python's Global Interpreter Lock (Summary)

View Course Details »

Certificate of Completion

This person’s account is verified and was created on July 26, 2026. Real Python certifies their completion of the Understanding Python's Global Interpreter Lock (GIL) course on July 28, 2026.

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Real Python is an online learning platform and expert community for Python software developers. It offers interactive online classes and in-depth tutorials created by a team of subject matter experts.