This post covers the complex (but rewarding) process of building native language support for JetBrains from scratch. From crafting lexers and parsers to wrestling with soft keywords, PSI trees, and error recovery, this guide walks through the real stuff.| evilmartians.com
Hypothesis 6.x¶| hypothesis.readthedocs.io
In Python, all exceptions must be instances of a class that derives from BaseException. In a try statement with an except clause that mentions a particular class, that clause also handles any excep...| Python documentation
The “Python library” contains several different kinds of components. It contains data types that would normally be considered part of the “core” of a language, such as numbers and lists. For these ...| Python documentation
The Python Development Mode introduces additional runtime checks that are too expensive to be enabled by default. It should not be more verbose than the default if the code is correct; new warnings...| Python documentation
In this step-by-step tutorial, you'll learn what scopes are, how they work, and how to use them effectively to avoid name collisions in your code. Additionally, you'll learn how to take advantage of a Python scope to write more maintainable and less buggy code.| realpython.com
In this step-by-step tutorial, you'll learn how to use the Python return statement when writing functions. Additionally, you'll cover some good programming practices related to the use of return. With this knowledge, you'll be able to write readable, robust, and maintainable functions in Python.| realpython.com
Source code: Lib/importlib/__init__.py Introduction: The purpose of the importlib package is three-fold. One is to provide the implementation of the import statement (and thus, by extension, the__i...| Python documentation
Classes provide a means of bundling data and functionality together. Creating a new class creates a new type of object, allowing new instances of that type to be made. Each class instance can have ...| Python documentation
Happy Holidays and a Happy New Year 2020 readers!| Jack Hacks
Structure of a program: A Python program is constructed from code blocks. A block is a piece of Python program text that is executed as a unit. The following are blocks: a module, a function body, ...| Python documentation
A small number of constants live in the built-in namespace. They are: Constants added by the site module: The site module (which is imported automatically during startup, except if the-S command-li...| Python documentation
Source code: Lib/typing.py This module provides runtime support for type hints. Consider the function below: The function surface_area_of_cube takes an argument expected to be an instance of float,...| Python documentation
>>>, The default Python prompt of the interactive shell. Often seen for code examples which can be executed interactively in the interpreter.,,..., Can refer to:- The default Python prompt of the i...| Python documentation
Editor, Adam Turner,. This article explains the new features in Python 3.12, compared to 3.11. Python 3.12 was released on October 2, 2023. For full details, see the changelog. Summary – Release hi...| Python documentation
Source code: Lib/contextlib.py This module provides utilities for common tasks involving the with statement. For more information see also Context Manager Types and With Statement Context Managers....| Python documentation
Source code: Lib/collections/__init__.py This module implements specialized container datatypes providing alternatives to Python’s general purpose built-in containers, dict, list, set, and tuple.,,...| Python documentation
This chapter explains the meaning of the elements of expressions in Python. Syntax Notes: In this and the following chapters, extended BNF notation will be used to describe syntax, not lexical anal...| Python documentation
If you quit from the Python interpreter and enter it again, the definitions you have made (functions and variables) are lost. Therefore, if you want to write a somewhat longer program, you are bett...| Python documentation
Generators are a tricky subject in Python. With this tutorial you’ll make the leap from class-based iterators to using generator functions and the “yield” statement in no time.| dbader.org
While preparing my talk for PyCascades 2023 on this very blog post series of Python's syntactic sugar, I had an inkling that I could unravel the global statement. After talking to some folks after my talk, I realized that I could, in fact, unravel it! The trick was realizing what| Tall, Snarky Canadian
This module provides various time-related functions. For related functionality, see also the datetime and calendar modules. Although this module is always available, not all functions are available...| Python documentation
The Python interpreter has a number of functions and types built into it that are always available. They are listed here in alphabetical order.,,,, Built-in Functions,,, A, abs(), aiter(), all(), a...| Python documentation
Source code: Lib/pdb.py The module pdb defines an interactive source code debugger for Python programs. It supports setting (conditional) breakpoints and single stepping at the source line level, i...| Python documentation
