Python 潮流周刊#142：Python 性能优化的进阶之路

JavaScript's strict mode is a way to opt in to a restricted variant of JavaScript, thereby implicitly opting-out of "sloppy mode". Strict mode isn't just a subset: it intentionally has different semantics from normal code. Strict mode code and non-strict mode code can coexist, so scripts can opt into strict mode incrementally.

Python 是一种脚本语言，相比 C/C++ 这样的编译语言，在效率和性能方面存在一些不足。但是，有很多时候，Python 的效率并没有想象中的那么夸张。本文对一些 Python 代码加速运行的技巧进行整理。 0. 代码优化原则 本文会介绍不少的 Python 代码加速运行的技巧。在深入代码优化细

The tables below list the standard values for the KeyboardEvent.key property, with an explanation of what the key is typically used for. Corresponding virtual keycodes for common platforms are included where available.

《码农周刊》已经累计发送了 38 期，我们将干货内容进行了精选。此为 Python 篇。 《码农周刊》往期回顾：http://weekly.manong.io/issues/ 如何让 Python 代码运行得更快？ 作者给出了 18 条 Python 代码性能优化小贴士，简单明了，拿来即用。 htt

Since we're using JavaScript to control elements, it's also very easy to make (interactive) animations. In this chapter we will take a look at how to do some basic animations.

《码农周刊》已经累计发送了 38 期，我们将干货内容进行了精选。此为 Python 篇。 《码农周刊》往期回顾：http://weekly.manong.io/issues/ 如何让 Python 代码运行得更快？ 作者给出了 18 条 Python 代码性能优化小贴士，简单明了，拿来即用。 htt

Use the permissions key to request special powers for your extension. This key is an array of strings, each of which is a permission request.

Python 是一种脚本语言，相比 C/C++ 这样的编译语言，在效率和性能方面存在一些不足。但是，有很多时候，Python 的效率并没有想象中的那么夸张。本文对一些 Python 代码加速运行的技巧进行整理。 0. 代码优化原则 本文会介绍不少的 Python 代码加速运行的技巧。在深入代码优化细

Some WebExtension APIs perform functions that usually occur as a result of a user action. Following the principle of "no surprises", these APIs can only be called from inside the handler for a user action (also referred to as user gestures). These user actions are:

A minimal Python environment installed through Conda.