Uploaded April 2012 | Updated September 2026, 1 week ago
If you keep your eyes fixated on the cross, you can see a very compelling colour after effect: If a dot disappears, it is replaced by an (illusory) dot of an opponent colour. For more information and other optical illusions, see http://www/cogsci.nl
If you keep your eyes fixated on the cross, you can see a very compelling colour after effect: If a dot disappears, it is replaced by an (illusory) dot of an opponent colour. For more information and other optical illusions, see http://www/cogsci.nl
![Publishing a Python package on pip [PythonLiveLessons #6]](https://i.ytimg.com/vi/mu7yct6hOSA/mqdefault.jpg "Publishing a Python package on pip [PythonLiveLessons #6]
Episode 6 of #PythonLiveLessons, a weekly live stream about Python code and more, hosted by Sebastiaan Mathôt. In this episode, well learn how to use pyproject.toml to add information about our package, and how to use flit to build our package and upload it to pypi so that users can easily install it with `pip install markdown_code_exec`.")
![Completing a code sketch (exec and eval) [PythonLiveLessons #1]](https://i.ytimg.com/vi/nBpVHmdXNuc/mqdefault.jpg "Completing a code sketch (exec and eval) [PythonLiveLessons #1]
Episode 1 of #PythonLiveLessons, a weekly live stream about Python code (with live coding) and more, hosted by Sebastiaan Mathôt. In this episode, well continue working on our Python project, `markdown_code_exec`. Well learn about the difference between expressions and statements, and the difference between eval() and exec(). At the end of this episode, well have a fully functional sketch of our program, which well develop further in future episodes! [To join a live broadcast, tune in to this YouTube channel on Tuesdays, 22:00 New Delhi, 18:00 Paris (CET), 09:00 Los Angeles.]")
