Exercises for those learning Python

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Be Careful with Python’s New-Style String Format

This should have been obvious to me for a longer time, but until earlier today I did not really realize the severity of the issues caused by str.format on untrusted user input. It came up as a way to bypass the Jinja2 Sandbox in a way that would permit r...

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Run time type checking in Python

Welcome to the third edition of Python’s byte. Before we jump into this week’s short tip, I wanted to thank you all for the immensely positive response and support that you showed for this little effort. I hope to live up to the expectation. It is a diffi... (more…)

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