Python -O won’t magically make every script faster, but in the right workloads it’s a free win—here’s how to test it safely.

Beta: This SDK is supported for production use cases, but we do expect future releases to have some interface changes; see Interface stability. We are keen to hear feedback from you on these SDKs.

This course picks up where CS50x leaves off, diving more deeply into the design and implementation of web apps with Python, JavaScript, and SQL using frameworks like Django, React, and Bootstrap.