Python 3.9’s PEG-based parser removed these barriers, which long-term could lead to more elegant syntax — our first example of this change is the new parenthesized context managers.

When to use a Python dictionary Using Python dictionaries makes the most sense under the following conditions: You want to store objects and data using names, not just positions or index numbers.

How Python uses type hints (it doesn’t) A key misconception about Python type hints is how they’re used. Python type hints are not used at runtime, at least not ordinarily. In fact, when your ...