Python Frequently Asked Questions Release 3.3.3
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Working with System Frameworks in Python and Objective-C
Working with System Frameworks in Python and Objective-C by James Barclay Feedback :) j.mp/psumac2015-62 2 Dude, Where’s My Source Code? CODE https://github.com/futureimperfect/psu-pyobjc-demo https://github.com/futureimperfect/PSUDemo SLIDES https://github.com/futureimperfect/slides 3 Dude, Where’s My Source Code? CODE https://github.com/futureimperfect/psu-pyobjc-demo https://github.com/futureimperfect/PSUDemo SLIDES https://github.com/futureimperfect/slides 3 Dude, Where’s My Source Code? CODE https://github.com/futureimperfect/psu-pyobjc-demo https://github.com/futureimperfect/PSUDemo SLIDES https://github.com/futureimperfect/slides 3 Agenda 1. What are system frameworks, and why should you care? 2. Brief overview of the frameworks, classes, and APIs that will be demonstrated. 3. Demo 1: PyObjC 4. Demo 2: Objective-C 5. Wrap up and questions. 4 What’s a System Framework? …and why should you care? (OS X) system frameworks provide interfaces you need to write software for the Mac. Many of these are useful for Mac admins creating: • scripts • GUI applications • command-line tools Learning about system frameworks will teach you more about OS X, which will probably make you a better admin. 5 Frameworks, Classes, and APIs oh my! Cocoa CoreFoundation • Foundation • CFPreferences - NSFileManager CoreGraphics - NSTask • Quartz - NSURLSession - NSUserDefaults • AppKit - NSApplication 6 CoreFoundation CoreFoundation is a C framework that knows about Objective-C objects. Some parts of CoreFoundation are written in Objective-C. • Other parts are written in C. CoreFoundation uses the CF class prefix, and it provides CFString, CFDictionary, CFPreferences, and the like. Some Objective-C objects are really CF types behind the scenes. -
Macspeechx.Py MODULE and ITS USE in an ACCELERATOR CONTROL SYSTEM Noboru Yamamoto*, J-PARC Cener, KEK and JAEA, Ibaraki, JAPAN
Proceedings of ICALEPCS2013, San Francisco, CA, USA TUPPC109 MacspeechX.py MODULE AND ITS USE IN AN ACCELERATOR CONTROL SYSTEM Noboru Yamamoto*, J-PARC cener, KEK and JAEA, Ibaraki, JAPAN Abstract With additional functionality such as user interface or macspeechX.py[1] is a Python module to accels speech selection of voices for specified UDP ports, this program synthesis library on MacOSX. This module have been can fit one or two pages of the paper used in the vocal alert system in KEKB[2] and J- While this system running without serious problem PARC[3] accelerator control system. Recent upgrade of until MacOSX came to the market. In Python on this module allow us to handle non-English lanugage, MacOSX does not includes macspeech.py as a its such as Japanese, through this module. Implementation components. It means we need to develop our own detail will be presented as an example of Python program solution before old Mac hardware would be replaced by accessing system library. new hardware which just runs MacOSX. SPEECH SYNTHESIS IN CONTROL In the next section, we will see several ways to write SYSTEMS Python module which bridges C/C++ library. In some control system, alerts to the operators can be sent as vocal messages. It used be require the special hardware or software to generate vocal message from computers in the system. When we started commissioning of KEKB accelerator, such an alert system was requested. We picked up: • speech synthesis library includes as one of standard libraries on Macintosh OS from Apple. • Macspeech.py module distributed as one of standard module with Python programming Langauge Figure 1: Software overview of KEKB/J-PARC vocal With these two components, we could build a very low alert system. -
Python for the C# Developer
{SDD} 2014 Software Design & Development Python for the C# developer Michael Kennedy @mkennedy http://blog.michaelckennedy.net Objectives • Introduce the basics of the Python language • Review what is awesome about C# and .NET • Explore Python's version of each C# / .NET feature DEVELOPMENTOR Michael Kennedy | @mkennedy | blog.michaelckennedy.net What is Python? • High-level programming language • Interpreted (sometimes JIT compiled) • Object-oriented (especially Python 3) • Strongly-typed with dynamic semantics • Syntax emphasizes readability • Supports modules and packages • Batteries included (large standard library [1]) DEVELOPMENTOR Michael Kennedy | @mkennedy | blog.michaelckennedy.net The ‘shape’ of a Python program • Python defines code blocks (known as suites in Python) using whitespace and colons. Things to note: def somemethod(name): • No semicolons if name == "Michael": print("Hi old friend") • Code blocks start with ‘:’ else: • Whitespace really really matters print("Nice to meet you") • There are no braces print("My name is … ") • There are no parentheses • Tabs are not your friend def main(): somemethod() Code suites DEVELOPMENTOR Michael Kennedy | @mkennedy | blog.michaelckennedy.net Python language demo DEVELOPMENTOR Michael Kennedy | @mkennedy | blog.michaelckennedy.net What's awesome about C# and .NET? System.Object: Everything is an object. LINQ IEnumerable + foreach loops Visual Studio / IDEs Class properties ( int Age {get; set;} ) Side-by-side execution (isolation) Anonymous types Iterator methods / yield return -
"This Book Was a Joy to Read. It Covered All Sorts of Techniques for Debugging, Including 'Defensive' Paradigms That Will Eliminate Bugs in the First Place
Perl Debugged By Peter Scott, Ed Wright Publisher : Addison Wesley Pub Date : March 01, 2001 ISBN : 0-201-70054-9 Table of • Pages : 288 Contents "This book was a joy to read. It covered all sorts of techniques for debugging, including 'defensive' paradigms that will eliminate bugs in the first place. As coach of the USA Programming Team, I find the most difficult thing to teach is debugging. This is the first text I've even heard of that attacks the problem. It does a fine job. Please encourage these guys to write more." -Rob Kolstad Perl Debugged provides the expertise and solutions developers require for coding better, faster, and more reliably in Perl. Focusing on debugging, the most vexing aspect of programming in Perl, this example-rich reference and how-to guide minimizes development, troubleshooting, and maintenance time resulting in the creation of elegant and error-free Perl code. Designed for the novice to intermediate software developer, Perl Debugged will save the programmer time and frustration in debugging Perl programs. Based on the authors' extensive experience with the language, this book guides developers through the entire programming process, tackling the benefits, plights, and pitfalls of Perl programming. Beginning with a guided tour of the Perl documentation, the book progresses to debugging, testing, and performance issues, and also devotes a chapter to CGI programming in Perl. Throughout the book, the authors espouse defensible paradigms for improving the accuracy and performance of Perl code. In addition, Perl Debugged includes Scott and Wright's "Perls of Wisdom" which summarize key ideas from each of the chapters, and an appendix containing a comprehensive listing of Perl debugger commands. -
Practical Ruby Projects: Practical Ruby Projects Ideas for the Eclectic Programmer
CYAN YELLOW MAGENTA BLACK PANTONE 123 C BOOKS FOR PROFESSIONALS BY PROFESSIONALS® THE EXPERT’S VOICE® IN OPEN SOURCE Companion eBook Available Practical Ruby Projects: Projects Ruby Practical Ideas for the Eclectic Programmer Dear Reader, You’ve learned the basics of Ruby, and you’re ready to move on to the next level— trying out advanced techniques, mastering best practices, and exploring Ruby’s full potential. With this book you’ll learn by experience while you tackle an exciting series of varied but always practical programming projects. What is an eclectic programmer, you ask? He or she is an inquisitive thinker Practical who likes to play around with new concepts, a person who is project-oriented and enjoys coding, a person who doesn’t mind some technical depth folded in with creative excursions, and a person who is always looking for fresh ideas. This book is a little different from other computer books. It is meant to be entertaining, exciting, and intellectually challenging. Inside you’ll find a collec- tion of diverse projects, ranging from the creative to the practical, written as a nod to all the great Rubyists I’ve been privileged to know. Each chapter dives into Ruby Projects new topics and approaches meant to exercise your programming muscles. You’ll start by building a cross-platform music environment, progress to drawing animations using scalable vector graphics, and then move on to prac- tical problem solving using simulation. In addition, you’ll implement your own turn-based strategy game and build a Mac-native RubyCocoa interface to it. -
Bleak Documentation Release 0.12.1
bleak Documentation Release 0.12.1 Henrik Blidh Jul 07, 2021 Contents 1 Features 3 1.1 Installation................................................3 1.2 Scan/Discover..............................................4 1.3 Usage...................................................6 1.4 Bleak backends..............................................6 1.5 Interfaces, exceptions and utils......................................8 1.6 Troubleshooting............................................. 24 1.7 Contributing............................................... 28 1.8 Credits.................................................. 29 1.9 Changelog................................................ 30 2 Indices and tables 43 Python Module Index 45 Index 47 i ii bleak Documentation, Release 0.12.1 Bleak is an acronym for Bluetooth Low Energy platform Agnostic Klient. • Free software: MIT license • Documentation: https://bleak.readthedocs.io. Bleak is a GATT client software, capable of connecting to BLE devices acting as GATT servers. It is designed to provide a asynchronous, cross-platform Python API to connect and communicate with e.g. sensors. Contents 1 bleak Documentation, Release 0.12.1 2 Contents CHAPTER 1 Features • Supports Windows 10, version 16299 (Fall Creators Update) or greater • Supports Linux distributions with BlueZ >= 5.43 (See Linux backend for more details) • OS X/macOS support via Core Bluetooth API, from at least OS X version 10.11 Bleak supports reading, writing and getting notifications from GATT servers, as well as a function for discovering BLE devices. Contents: 1.1 Installation 1.1.1 Stable release To install bleak, run this command in your terminal: $ pip install bleak This is the preferred method to install bleak, as it will always install the most recent stable release. If you don’t have pip installed, this Python installation guide can guide you through the process. 1.1.2 From sources The sources for bleak can be downloaded from the Github repo. -
Symbols & Numbers A
ruby_02.book Page 267 Thursday, May 10, 2007 4:12 PM INDEX Symbols & Numbers \ (backslash), in regular expression, for literal characters, 144 %Q for instantiating Strings, 23, \W, in regular expression, for 108–109, 215–216, 219, 239, whitespace, 66 245, 248–250 { } (braces) %w for instantiating Arrays, 47, for blocks, 28 113, 115 for declaring Hash, 42 & (ampersand), for expressing blocks {x}, in regular expression, 79 and Procs, 105–106 - method (Hash), 93 ! (exclamation point), for destructive ||= operator, 77–78, 127 methods, 20, 22–23 | (pipe) character, in regular || (or) operator, 17 expression, 56 # character + method of Integers and Strings, 3–4 for comments, 14 + (plus sign), in regular for instance method, 234 expression, 62 #{} for wrapping expression to be = (equal sign), for assigning value to interpolated, 23 variable, 9 #! (shebang), 47 == operator, for equality testing, 14 $ (dollar sign), for bash prompt, 19 =begin rdoc, 22 * (asterisk), in irb prompt, 8 =end, 22 ** (asterisk doubled), for “to the <=> method (Comparable), 145, power of,” 72 150–151 /\d+/ in regular expression, for digits <% and %> tags, 211 only, 79 <%= tag, for printing expression, 214 :needs_data Symbol key, 116 99bottles.rb script, 20–25 :nitems Symbol key, 116 :unless0th Symbol key, 116 ? (question mark) A in predicate method names, 22 actionpack, warnings related to, 226 in regular expression, for optional Active Record, Rails dependence expressions, 144 on, 227 @ sign, for instance variable, 21–22 Agile Web Development with Rails @@ sign, for class -
Python Guide Documentation 0.0.1
Python Guide Documentation 0.0.1 Kenneth Reitz 2015 09 13 Contents 1 Getting Started 3 1.1 Picking an Interpreter..........................................3 1.2 Installing Python on Mac OS X.....................................5 1.3 Installing Python on Windows......................................6 1.4 Installing Python on Linux........................................7 2 Writing Great Code 9 2.1 Structuring Your Project.........................................9 2.2 Code Style................................................ 15 2.3 Reading Great Code........................................... 24 2.4 Documentation.............................................. 24 2.5 Testing Your Code............................................ 26 2.6 Common Gotchas............................................ 30 2.7 Choosing a License............................................ 33 3 Scenario Guide 35 3.1 Network Applications.......................................... 35 3.2 Web Applications............................................ 36 3.3 HTML Scraping............................................. 41 3.4 Command Line Applications....................................... 42 3.5 GUI Applications............................................. 43 3.6 Databases................................................. 45 3.7 Networking................................................ 45 3.8 Systems Administration......................................... 46 3.9 Continuous Integration.......................................... 49 3.10 Speed.................................................. -
Intermediate Perl
SECOND EDITION Intermediate Perl Randal L. Schwartz, brian d foy, and Tom Phoenix Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Intermediate Perl, Second Edition by Randal L. Schwartz, brian d foy, and Tom Phoenix Copyright © 2012 Randal Schwartz, brian d foy, Tom Phoenix. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://my.safaribooksonline.com). For more information, contact our corporate/institutional sales department: 800-998-9938 or [email protected]. Editors: Simon St. Laurent and Shawn Wallace Indexer: Lucie Haskins Production Editor: Kristen Borg Cover Designer: Karen Montgomery Copyeditor: Absolute Service, Inc. Interior Designer: David Futato Proofreader: Absolute Service, Inc. Illustrator: Rebecca Demarest March 2006: First Edition. August 2012: Second Edition. Revision History for the Second Edition: 2012-07-20 First release See http://oreilly.com/catalog/errata.csp?isbn=9781449393090 for release details. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. Intermediate Perl, the image of an alpaca, and related trade dress are trademarks of O’Reilly Media, Inc. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly Media, Inc., was aware of a trademark claim, the designations have been printed in caps or initial caps. While every precaution has been taken in the preparation of this book, the publisher and authors assume no responsibility for errors or omissions, or for damages resulting from the use of the information con- tained herein. -
Cocoa Fundamentals Guide
Cocoa Fundamentals Guide 2006-10-03 registered in the United States and other Apple Computer, Inc. countries. © 2006 Apple Computer, Inc. Adobe, Acrobat, and PostScript are All rights reserved. trademarks or registered trademarks of Adobe Systems Incorporated in the U.S. No part of this publication may be and/or other countries. reproduced, stored in a retrieval system, or transmitted, in any form or by any means, Intel and Intel Core are registered mechanical, electronic, photocopying, trademarks of Intel Corportation or its recording, or otherwise, without prior subsidiaries in the United States and other written permission of Apple Computer, Inc., countries. with the following exceptions: Any person Java and all Java-based trademarks are is hereby authorized to store documentation trademarks or registered trademarks of Sun on a single computer for personal use only Microsystems, Inc. in the U.S. and other and to print copies of documentation for countries. personal use provided that the OpenGL is a registered trademark of Silicon documentation contains Apple’s copyright Graphics, Inc. notice. Simultaneously published in the United The Apple logo is a trademark of Apple States and Canada. Computer, Inc. Even though Apple has reviewed this document, Use of the “keyboard” Apple logo APPLE MAKES NO WARRANTY OR (Option-Shift-K) for commercial purposes REPRESENTATION, EITHER EXPRESS OR IMPLIED, WITH RESPECT TO THIS without the prior written consent of Apple DOCUMENT, ITS QUALITY, ACCURACY, may constitute trademark infringement and MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. AS A RESULT, THIS unfair competition in violation of federal DOCUMENT IS PROVIDED “AS IS,” AND and state laws. -
Building Python Modules on Circleci OS X Instances
Building Python modules on CircleCI OS X instances Recently I've been building a couple of supplimental build tools in Python for enhancing the development process of the iOS application I work on. I've been trying to make these tools to be appealing for other developers to use and integrate into their systems as well. I see having CI and unit tests as a core part of this goal. I started using CircleCI for my continuous integration environment for these projects. This was working out very well until I started working on some code that relies on a couple of OS X specific APIs. Due to that requirement I was unable to continue using the Linux platform for testing this code. Luckily CircleCI provides OS X instances for open source Mac and iOS projects. I put in a request and was granted access to using OS X instances for building this Python tool. However, I immediately ran into issues with getting the tool to be installed and have my tests run. CircleCI doesn't provide engineering support for free accounts, so I had to work all this out on my own, hopefully you can use this as a guide to also be able to support building Python on OS X build instances on CircleCI. Background The Python tool I am writing relies on the pyobjc framework. This allows Python to make calls into Cocoa and the various other frameworks provided by Apple on OS X. This comes pre-installed on OS X with the system Python version, 2.7.10. -
Python Setup and Usage Release 3.3.3
Python Setup and Usage Release 3.3.3 Guido van Rossum Fred L. Drake, Jr., editor November 17, 2013 Python Software Foundation Email: [email protected] CONTENTS 1 Command line and environment3 1.1 Command line............................................3 1.2 Environment variables........................................7 2 Using Python on Unix platforms 11 2.1 Getting and installing the latest version of Python.......................... 11 2.2 Building Python........................................... 12 2.3 Python-related paths and files.................................... 12 2.4 Miscellaneous............................................ 12 2.5 Editors................................................ 12 3 Using Python on Windows 15 3.1 Installing Python........................................... 15 3.2 Alternative bundles.......................................... 15 3.3 Configuring Python......................................... 16 3.4 Python Launcher for Windows.................................... 18 3.5 Additional modules......................................... 21 3.6 Compiling Python on Windows................................... 21 3.7 Other resources............................................ 22 4 Using Python on a Macintosh 23 4.1 Getting and Installing MacPython.................................. 23 4.2 The IDE............................................... 24 4.3 Installing Additional Python Packages................................ 24 4.4 GUI Programming on the Mac.................................... 24 4.5 Distributing Python Applications