Map is a common way to transform lists in most programming languages. In Python, map is a function that loops over a list and applies a function (that you provide) to each item. Your function receives ...

Working with files in Python is pretty easy. But there’s a common mistake that can sneak into your code. Not closing the file ...

The biggest reason to use a list is to able to find objects by their position in the list. To do this, you use Python’s index notation: a number in brackets, starting at 0, that indicates the ...

And what is being manipulated isn’t your common or garden variables. What you’ve got are objects. Every data item under Python is an object with a name, an identity, a type and a value.

Any mutable Python object doesn’t have a consistent hash value over its lifetime, and so can’t be used as a key. For instance, a list can’t be a key, because elements can be added to or ...

Python — and things like Micropython — have the same kind of division. Python started as a scripting language, but it has added object features, allowing a rich set of tools for scripters to use.