{"id":14886,"date":"2016-06-13T14:06:41","date_gmt":"2016-06-13T13:06:41","guid":{"rendered":"http:\/\/www.recantha.co.uk\/blog\/?p=14886"},"modified":"2016-06-13T14:06:41","modified_gmt":"2016-06-13T13:06:41","slug":"getting-started-with-python-and-raspberry-pi-book-review","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=14886","title":{"rendered":"Getting Started with Python and Raspberry Pi – book review"},"content":{"rendered":"

<\/p>\n

David Whale sent me a couple of books to look at recently<\/em>. The first, Getting Started with Raspberry Pi Zero, I reviewed a few weeks ago<\/a>. I now come onto the second one:\u00a0Getting Started with Python and Raspberry Pi\u00a0<\/a><\/strong>by\u00a0Dan Nixon.<\/strong><\/p>\n

I feel I have to start by giving an indication of whom I believe the book is aimed at. It is in my opinion, surprisingly, not suitable for beginners. Even though it has the ‘Getting Started’ title, it is very much suited to people who are programmers already, rather than absolute beginners. The structure of the book, and some of the concepts covered, is more at an intermediate or advanced level – suitable for those comfortable with programming concepts, but unfamiliar with the way Python “does it”. With that in mind, I did start to wonder, halfway through, as to whether the ‘Getting Started’ moniker actually did the book a disservice.<\/p>\n

The book starts off optimistically enough with a chapter on installing Raspbian and configuring it. Now, the book was published in September last year and Raspbian has since come on a long way, particularly in the area of wifi configuration, so there are a number of things in the chapter that don’t apply any more. This isn’t the fault of the author, of course: Raspbian is a bit of a moveable feast when it comes to\u00a0interfaces and features.\u00a0However, it does make me wonder:\u00a0Are we now past the point where an installation and configuration chapter is advisable or even needed?<\/em> This chapter also explains that we are going to be using Python 2.7 rather than Python 3. This was a bit disappointing as version 3 is clearly the way forward, but I can understand the argument that there are more libraries available for 2.7. I would think, though, that even if you are using Python 2.7, you would use, for example, the print(” “) syntax rather than the print ” ” syntax, just so that when you move to Python 3 it ‘just works’. Unfortunately, the old way of doing certain things, regardless of any upwards compatibility, is very much adhered to in this book.<\/p>\n

The next chapter concerns control flows and data types. This is when I realised that the book must<\/em> be\u00a0aimed at existing programmers. Rather than teaching by example, which is the way most beginners books go nowadays, this book instead goes for a bottom-up approach. It\u00a0does mean that absolute beginners will flounder at this early stage. Indeed, they may be asking “What the heck\u00a0is a ‘control flow’?<\/em>” Again, it’s not the content of the book that is in question – in fact, it’s very well-written and the content is terrific for existing programmers – it’s just that the title of the book doesn’t help very much to indicate who it is aimed at.<\/p>\n

The next couple of chapters go into data structures, I\/O, object-oriented programming and threading. These are\u00a0very<\/em> advanced topics, particular OO and threading, and I was surprised to find them in a Getting Started book. They are very welcome from my point of view – being able to do more than one thing at once is key to modern programming – but still… The book hasn’t really taught very much before getting to this point, and I wonder if a regular reader is ready for such advanced concepts.<\/p>\n

The next chapter, likewise, seems very advanced for a Getting Started book – it’s all about packaging up your code. Very useful, but perhaps it should have been included at the end so that when you’ve created something substantial\u00a0then<\/em> you can learn how to package it.<\/p>\n

Next up is a chapter on using the GPIO pins of the Raspberry Pi via the RPi.GPIO library. With the advent of GPIO Zero, this seems to be a little ‘old-hat’ but of course with a September 2015 publication date, the new library wasn’t really around to be used. What is in the chapter, however, is excellent as it deals with using LEDs, switches and also PWM. I do note that the author is still using ‘sudo’ to execute the\u00a0Python commands. This won’t do you any harm, of course, but it is now not necessary.<\/p>\n

The camera module is the subject of the next chapter and I’m pleased that the author chose to go along the picamera library route as it is an excellent library. He goes very quickly through basic use and then goes into using threading with the camera. This surprised me as I would have thought a Getting Started guide would go more into the functionality of the picamera library. As it is, the more advanced features of the library are glossed over or, in a lot of cases, skipped entirely. This may be because the author wished to get back into strict Python quickly, but it is a missed opportunity in my opinion.<\/p>\n

The next chapter is extremely interesting and well thought-out. It deals with consuming APIs over the Internet in a variety of data formats such as XML, JSON and even how to parse HTML using BeautifulSoup. A great chapter, but, perhaps, a list of more APIs that can be accessed would have been welcome.<\/p>\n

Creating command-line interfaces is to do with creating ‘executable’ programs using Python. Interesting, but again slightly beyond\u00a0the remit of a Getting Started guide.<\/p>\n

Debugging using PDB and log files is tackled next. Very useful for more advanced programming when you need a lot more tracing. I’m just not sure that the book has got the reader far enough along to merit introducing the topic.<\/p>\n

Finally, there is a good chapter devoted to designing GUIs with Qt. This is very interesting and useful and covers using Qt Designer to design forms and screens as well as interacting with them at code level. The form designer reminds me of Visual Basic and even Microsoft Access! This chapter is of particular use to those who want to be able to program for the desktop environment.<\/p>\n

Summing up<\/h2>\n

This book is very well-written.\u00a0It teaches people who are already familiar with programming how to do things the Pythonic way, covering\u00a0the details of Python code structure and taking a broader approach to other topics. However, despite this I feel that the title of the book is misleading. “Getting Started” clearly points toward the book being suitable for beginners. Beginners, however, would be lost by chapter 2. I think the best way I can say it is that the book is great if you are used to a from-the-ground-up approach. However, if you’re looking for a book with lots of worked examples that take you through programming in a logical, friendly way, then this one is probably not for you.<\/p>\n

I commend the author and editors for trying to cover a lot of ground with the book. However, based on the title, it\u00a0is not quite what I was expecting!<\/p>\n","protected":false},"excerpt":{"rendered":"

David Whale sent me a couple of books to look at recently. The first, Getting Started with Raspberry Pi Zero, I reviewed a few weeks ago. I now come onto the second one:\u00a0Getting Started with Python and Raspberry Pi\u00a0by\u00a0Dan Nixon.…<\/p>\n

Read more →<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[7,44],"tags":[],"class_list":["post-14886","post","type-post","status-publish","format-standard","hentry","category-books","category-reviews"],"yoast_head":"\nGetting Started with Python and Raspberry Pi - book review - Raspberry Pi Pod<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=14886\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Getting Started with Python and Raspberry Pi - book review - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"David Whale sent me a couple of books to look at recently. 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They're all Wiley books, so the quality is excellent. For $1, you can get: Complete Electronics Self-Teaching Guide with Projects Exploring Arduino Learning Python with Raspberry Pi (see my 2014 review here) Raspberry\u2026","rel":"","context":"In "Arduino"","block_context":{"text":"Arduino","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=55"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/03\/Screenshot-2018-03-14-at-20.16.43-Edited.png?fit=1043%2C363&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/03\/Screenshot-2018-03-14-at-20.16.43-Edited.png?fit=1043%2C363&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/03\/Screenshot-2018-03-14-at-20.16.43-Edited.png?fit=1043%2C363&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/03\/Screenshot-2018-03-14-at-20.16.43-Edited.png?fit=1043%2C363&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":27,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=27","url_meta":{"origin":14886,"position":1},"title":"markwilson.it \u00bb A beginner\u2019s guide to getting started with Raspberry Pi (#RasPi)","author":"Michael Horne","date":"20 August 2012","format":false,"excerpt":">Fantastic beginners guide for the RPi. Just brilliant. We discovered at the MK Raspberry Jam that not enough attention was being paid to the 1000s of people who bought a Pi but were not already experts. It's a bit of a flaw in the Foundation's work, especially when the educational\u2026","rel":"","context":"In "Raspberry Pi Foundation"","block_context":{"text":"Raspberry Pi Foundation","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=42"},"img":{"alt_text":"","src":"https:\/\/blogger.googleusercontent.com\/tracker\/3715640409195873782-231287917054775984?l=raspberrypipod.blogspot.com","width":350,"height":200},"classes":[]},{"id":14447,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=14447","url_meta":{"origin":14886,"position":2},"title":"Getting started with Picamera on the Raspberry Pi","author":"Michael Horne","date":"1 April 2016","format":false,"excerpt":"Ben Nuttall has just published a new 'Learn' resource on the Raspberry Pi website. This new resource takes you through\u00a0using the Picamera Python library to do the following: How to connect the camera module to the Raspberry Pi How to use Python to control the camera module How to use\u2026","rel":"","context":"In "Camera module"","block_context":{"text":"Camera module","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=8"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.raspberrypi.org\/learning\/getting-started-with-picamera\/images\/effects.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.raspberrypi.org\/learning\/getting-started-with-picamera\/images\/effects.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.raspberrypi.org\/learning\/getting-started-with-picamera\/images\/effects.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.raspberrypi.org\/learning\/getting-started-with-picamera\/images\/effects.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":17235,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=17235","url_meta":{"origin":14886,"position":3},"title":"Getting started with Digital Making on the Raspberry Pi","author":"Michael Horne","date":"24 July 2017","format":false,"excerpt":"Over the past couple of weeks, I've been working on a new article for beginners to the world of digital making. Called \"Getting Started with Digital Making on the Raspberry Pi\", the article highlights some essential skills and places to start. Take a look at the article here. It's intended\u2026","rel":"","context":"In "Making"","block_context":{"text":"Making","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=50"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/digital.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/digital.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/digital.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/digital.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/digital.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":13848,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=13848","url_meta":{"origin":14886,"position":4},"title":"Packt offering free Raspberry Pi robotics e-book today","author":"Michael Horne","date":"9 December 2015","format":false,"excerpt":"Packt Publishing have been offering a free e-book a day for a while now. Today is the turn of Richard Grimmett's Raspberry Pi Robotics Projects. Here is a contents listing direct from their web page: 1: GETTING STARTED WITH RASPBERRY PI 2: PROGRAMMING RASPBERRY PI 3: PROVIDING SPEECH INPUT AND\u2026","rel":"","context":"In "Books"","block_context":{"text":"Books","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=7"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.packtpub.com\/sites\/default\/files\/4322OT%20Raspberry%20Pi%20Robotic%20Projects.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":10520,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=10520","url_meta":{"origin":14886,"position":5},"title":"Southend-on-Sea Raspberry Jam for Raspberry Pi enthusiasts – 16th August","author":"Michael Horne","date":"26 July 2014","format":false,"excerpt":"Booking is now open for the next Jam at Southend which takes place on Saturday 16th August, and what a Jam-packed Jam it looks like being. Here's a list of the presentations\/workshops\u00a0currently listed: Robot arm interfacing and video streaming via the web Robot Arm - Human interfacing accelerometer Arduino \/\u2026","rel":"","context":"In "Events"","block_context":{"text":"Events","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=19"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.soslug.org\/sites\/soslug.org\/files\/users\/user147\/Ad-RaspberryPi.png?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/14886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14886"}],"version-history":[{"count":3,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/14886\/revisions"}],"predecessor-version":[{"id":14889,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/14886\/revisions\/14889"}],"wp:attachment":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}