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Python FTW: Under the Hood

Needles in a Haystack

Discover how Python manages variable scopes, the intricacies of object deletion, and the challenges faced when modifying iterables. This lesson helps you predict code behavior and avoid common Python errors by examining practical examples.

We'll cover the following...

I haven’t met a single experienced Pythonist to date who has not come across one or more of the following scenarios.

1.

Can you predict the output of this code?

Python 3.5
x, y = (0, 1) if True else None, None
print(x, y)

2.

Let’s try to print a tuple. ...