Practical Programming: An Introduction to Computer Science Using Python 3 (Pragmatic Programmers)

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  • October 11, 2016
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By Paul Gries, Jennifer Campbell, Jason Montojo

This publication is for an individual who desires to comprehend desktop programming. you will discover ways to application in a language that' s utilized in thousands of smartphones, capsules, and desktops. you will code besides the booklet, writing courses to resolve real-world difficulties as you research the basics of programming utilizing Python three. you will find out about layout, algorithms, checking out, and debugging, and are available away with all of the instruments you want to produce caliber code. during this moment variation, we've got up-to-date just about all the fabric, incorporating the teachings we have realized during the last 5 years of educating Python to humans new to programming.

You don't want any programming event to start. First, you will get an in depth advent to Python and to programming. you can find out precisely what occurs whilst your courses are completed. via real-world examples, you are going to easy methods to paintings with numbers, textual content, vast facts units, and documents. Then you will see how you can create and use your individual information types.

The incremental examples exhibit you the stairs and missteps that ensue whereas constructing courses, so that you recognize what to anticipate in the event you take on an issue by yourself. encouraged via "How to layout courses" (HtDP), you will study a six-step recipe for designing capabilities, which is helping you as you begin to benefit the concepts--and turns into a vital part of writing courses by means of the end.

As you discover ways to use the basic programming instruments within the first half the e-book, you will see find out how to record and arrange your code so you and different programmers can extra simply learn and are aware of it. past the fundamentals, you are going to the way to make sure that your courses are trustworthy, and the way to paintings with databases, obtain facts from the net immediately, and construct consumer interfaces. most significantly, you are going to the right way to imagine like a qualified programmer.

You'll have to obtain Python three, on hand from "python.org". With that obtain comes IDLE, the editor we use for writing and operating Python courses. (If you utilize Linux, you could have to installPython three and IDLE separately.)

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108 108 118 a hundred twenty five 126 127 Repetition 7. 1 Counted Loops . . 7. 2 whereas Loops . . . . 7. three consumer enter Loops 7. four Controlling Loops 7. five sort Notes . . . . 7. 6 precis . . . . . 7. 7 workouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 131 one hundred forty 148 149 153 154 one hundred fifty five . . . . . . . . . . . . . . document erratum ready completely for Trieu Nguyen this reproduction is (P1. zero printing, April 2009) eight CONTENTS eight nine dossier Processing eight. 1 One list in step with Line . . . . eight. 2 files with a number of Fields eight. three Positional info . . . . . . . eight. four Multiline files . . . . . . eight. five taking a look forward . . . . . . . . eight. 6 Writing to documents . . . . . . . . eight. 7 precis . . . . . . . . . . . eight. eight workouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 one hundred sixty 171 174 177 179 181 183 183 units nine. 1 nine. 2 nine. three nine. four nine. five and Dictionaries units . . . . . . . . . . . Dictionaries . . . . . . Inverting a Dictionary . precis . . . . . . . . routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 185 a hundred ninety 197 198 199 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 204 211 211 212 eleven looking out and Sorting eleven. 1 Linear seek . . . . . . . . . . . eleven. 2 Binary seek . . . . . . . . . . . eleven. three Sorting . . . . . . . . . . . . . . . eleven. four extra effective Sorting Algorithms eleven. five Mergesort: An N log2 N set of rules eleven. 6 precis . . . . . . . . . . . . . . eleven. 7 routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214 214 218 222 228 229 233 234 12 development 12. 1 extra on capabilities 12. 2 Exceptions . . . . . 12. three trying out . . . . . . . 12. four Debugging . . . . . 12. five styles . . . . . . 12. 6 precis . . . . . . 12. 7 routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 237 242 249 254 256 260 261 10 Algorithms 10. 1 looking out . 10. 2 Timing . . 10. three precis . 10. four workouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . document erratum ready solely for Trieu Nguyen this reproduction is (P1. zero printing, April 2009) nine CONTENTS thirteen Object-Oriented Programming thirteen. 1 category colour . . . . . . . . . thirteen. 2 detailed tools . . . . . . thirteen. three extra approximately dir and aid . thirteen. four a bit of OO conception . thirteen. five an extended instance . . . . . thirteen. 6 precis . . . . . . . . . . thirteen. 7 routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 271 276 278 280 288 293 293 14 Graphical person Interfaces 14. 1 The Tkinter Module . . . . . . . 14. 2 uncomplicated GUI building . . . . 14. three versions, perspectives, and Controllers 14. four sort . . . . . . . . . . . . . . . . 14. five a couple of extra Widgets . . . . . . . 14. 6 Object-Oriented GUIs . . . . . . 14. 7 precis . . . . . . . . . . . . . 14. eight workouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 295 296 301 307 312 316 317 318 15 Databases 15.

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