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Head First Programming: A Learner's consultant to Programming utilizing the Python Language by means of David Griffiths. O'Reilly & affiliates, Inc.,2009

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There’s only one challenge. not anyone is familiar with which surfer bought which ranking. you recognize the successful ratings, however the winnng surfers stay a mystery... W internal s Surf-A-Thon 142   bankruptcy four 1. nine. 12 2. eight. sixty five three. eight. forty five 1st second third data in documents and arrays You one way or the other forgot the surfer names together with your rush to trap a few waves sooner than the sunshine is long gone, you forgot concerning the different piece of information kept within the effects. txt dossier: the identify of every surfer. with no the names, you can’t probably recognize which rating is going with which identify, so the scoreboard is barely half-complete. the difficulty is, your array shops one information merchandise in every one aspect, now not . appears like you continue to have your paintings minimize out for you. There’ll be no catching waves till this factor is resolved. You forgot to approach the names. Name rating Johnny eight. sixty five Juan nine. 12 Joseph eight. forty five Stacey 7. eighty one Aideen eight. 05 Zack 7. 21 Aaron eight. 31 How do you're thinking that you could be mindful the names and the rankings for every surfer within the contest? as soon as you might have thought of this challenge, flip over to bankruptcy five and notice should you can unravel this factor. you're the following 4   143 programming toolbox Your Programming Toolbox bankruptcy four You’ve received bankruptcy four less than your belt. Let’s glance again at what you’ve discovered during this bankruptcy: ols o T g n i m m a disk Progr a kept on eading dat that holds y le * records - r b ia r a v n collectio could be accessed b a s y a r r at *a ta goods th * open() - open a dossier for proces a number of da sing ic if c e p s a in n io index t * c clo se( e ) ll shut a dossier co arranging a g in t r o s * * for - iterate over anything order * string. split() - minimize a string int o a number of elements * [] - the array index operator * array. append() - upload an merchandise to the top of an array * array. sort() - kind an array, lowest-tohighest * array. reverse() - switch the order of an array via reversing it 144   bankruptcy four Python instruments 5 hashes and databases placing facts as an alternative To surf one‛s facts thoroughly, one needs to consistently perform one‛s pose... Arrays aren’t the one exhibit on the town by way of info.  Programming languages include different data-arranging candies too, and our selected device, Python, is not any exception. during this bankruptcy, you’ll affiliate values with names utilizing a knowledge constitution typically known as the hash (better often called dictionary to Python-folk). And by way of operating with kept info, you’ll learn info from an exterior database procedure in addition to from typical text-based documents. all of the world’s awash with information, so flip the web page and begin making use of your ever-expanding programming talents to a few cool data-processing initiatives. this can be a new chapter   one hundred forty five still searching for a winner Who received the browsing contest? within the earlier bankruptcy, you labored out the pinnacle 3 ratings, yet they’re now not a lot use with out the names of the surfers that completed these rankings. there'll no be browsing for you until eventually you’ve comprehensive this system. Here’s the code to date: ratings = [] result_f = open("results. txt") for line in result_f: (name, rating) = line.

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