Parallel Collections Measuring Performance Language Performance on the JVM The performance model on the JVM is someti...

The following modules have specific security considerations: base64: base64 security considerations in RFC 4648, hashlib: all constructors take a “usedforsecurity” keyword-only argument disabling k...

Implementing Custom Collections (Scala 2.13) Language Martin Odersky, Lex Spoon and Julien Richard-Foy This article s...

Source code: Lib/tracemalloc.py The tracemalloc module is a debug tool to trace memory blocks allocated by Python. It provides the following information: Traceback where an object was allocated, St...

Source code: Lib/tkinter/colorchooser.py The tkinter.colorchooser module provides the Chooser class as an interface to the native color picker dialog. Chooser implements a modal color choosing dial...

Quasiquotes Unlifting Language This doc page is specific to features shipped in Scala 2, which have either been remov...

Source code: Lib/email/contentmanager.py Content Manager Instances: Currently the email package provides only one concrete content manager, raw_data_manager, although more may be added in the futur...

Operating System Interface: The os module provides dozens of functions for interacting with the operating system: Be sure to use the import os style instead of from os import *. This will keep os.o...

Collections Concrete Immutable Collection Classes Language Scala provides many concrete immutable collection classes ...

Source code: Lib/webbrowser.py The webbrowser module provides a high-level interface to allow displaying web-based documents to users. Under most circumstances, simply calling the open() function f...