Head First Python 2e

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A: That may be how some other programming languages roll, but not Python. Variables come into existence the moment they are assigned a value, and that value can be of any type. There’s no need to predeclare type information, as Python works out the types dynamically at runtime. After graduating with my degree in literature, I tripped into a web development internship, which transformed into a career and to talking to you right now.

This book was written for experienced Python 2 programmers who want to become proficient in Python 3. A: We’d love to tell you that it doesn’t matter, but it does. When it comes to indenting your Python code, you can use spaces or tabs, but not both (so, no mixing’n’matching). Why this is so is quite technical, so we’re not going to get into the weeds on this right now. Our best advice is to configure your editor to automatically replace taps of the tab key with four spaces. And, yes, there’s a convention in the Python programming community to indent by four spaces, not by two, and not by eight. You can, of course, ignore this convention if you so wish, but note that most other Python programmers are hardwired to expect indentation by four spaces. Of course, there’s always the rebels who insist on doing their own thing. The goal of annotations is not to make life easier for the interpreter; it’s to make life easier for the user of your function. Annotations are a documentation standard, not a type enforcement mechanism. In Python, strings can be enclosed in a single quote character ( '), a double quote character ( "), or what’s known as triple quotes ( """ or ''').How does your brain know what’s important? Suppose you’re out for a day hike and a tiger jumps in front of you, what happens inside your head and body? This game applies many of the same concepts and tasks as Bounce! but with more depth and increased complexity. You then extend the Hangman game with new features, like word lists and difficulty levels, while learning about dictionaries, key-value pairs, and assignment to multiple variables. Q: I keep getting errors when I try to run my beer song code. But my code looks fine to me, so I’m a little frustrated. Any suggestions? As the author, Dr. Bryson Payne, said in his recent TEDx talk, “Step out of your comfort zone, and become literate in the language of technology.” (Reviewed by David Schlesinger and Steven C. Howell.)

Q: And when I press F5 in IDLE’s edit window, it’s as if the module’s code is imported with an import statement, right? Head First Object-Oriented Analysis and Design is all about becoming a better programmer and product lead by properly gathering, analyzing, and testing the outcome of your software features. The aim of this book is to help you get satisfied customers, solve real problems, and have real impact as a software engineer. Based on its more involved and sophisticated examples, and the authors’ own recommendation in the preface, this is probably the most advanced Python book on our list. It’s profusely illustrated, the examples are straightforward and clearly presented, and it’s a solid guide for someone who wants to get a good grounding in the basics, plus a little more.

Python’s package ecosystem is to die for

Chapter 11: Error — This chapter talks about the error ranges with predictions. We don’t expect something exact, but something approximate, but by how much?• What Head First explains about learning is something that many of us still do not understand. We think that through sheer willpower, we can learn. Breaking News: App Engine Code Update: As of January 1, 2014, Google App Engine no longer supports webapps based on release 2.5 of Python. This breaks the code in the book. Here's updated code for the webapp in Chapter 10 which is compatible with release 2.7 of Python, which is now GAE's standard. Note: in addition to dropping support for 2.5, Google also dropped support for the Django forms technology described in the book. The code in the ZIP archive has been adjusted to "hard-code" the form, as opposed to dynamically generate it with help from Django. While many of the topics covered in this book are found in introductory books, Fluent Python provides much more detail, illuminating many of the more nuanced and overlooked features of the Python language. I received the book yesterday and started to read it…and I couldn’t stop. This is definitely très ‘cool.’ It

Chapter 1: Introduction to Data Analysis — This chapter explains what tools data analysts have to analyze tons of data to drive real-world action by breaking down and structuring problems.• cal development strategies—gets my brain going without having to slog through a bunch of tired, stale reader.…’ It’s clever, wry, hip and practical—there aren’t a lot of textbooks that can make that claim and live Chapter 7: Subjective Probabilities — This chapter teaches the power of standard deviation and relativity for numbers that are “made up” but have worth by their relative nature.• A: The new version of draw replaces the previous one, which has disappeared into the digital ether (in a puff of smoke), never to be heard from again.

Chapter 9: Project Resource Management — This chapter is about building the best team with the best people. This chapter also talks a bit about human resource management. The final section, Getting it Out There, focuses on effectively communicating with the consumers of your code, yourself included. Q: I’m really surprised those first three lines of code ran at all. Surely those three variables, suits , faces , and numbered , need to be predeclared with some sort of type? This book makes us better engineers and prepares us for team leadership positions or even an engineer product manager role. So far, we’ve used the single-argument version of range, which—from the documentation—expects a value for stop to be provided. When no other value is provided, range defaults to using 0 as the start value, but you can set it to a value of your choosing. When you do, you must provide a value for stop. In this way, range becomes a multi-argument invocation.