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• How to optimize shopping carts for minimal prices?

  - by tangens

  I have a list of items I want to buy. The items are offered by different shops and different prices. The shops have individual delivery costs. I'm looking for an optimal shopping strategy (and a java library supporting it) to purchase all of the items with a minimal total price. Example: Item1 is offered at Shop1 for $100, at Shop2 for $111. Item2 is offered at Shop1 for $90, at Shop2 for $85. Delivery cost of Shop1: $10 if total order < $150; $0 otherwise Delivery cost of Shop2: $5 if total order < $50; $0 otherwise If I buy Item1 and Item2 at Shop1 the total cost is $100 + $90 +$0 = $190. If I buy Item1 and Item2 at Shop2 the total cost is $111 + $85 +$0 = $196. If I buy Item1 at Shop1 and Item2 at Shop2 the total cost is $100 + $10 + $85 + $0 = 195. I get the minimal price if I order Item1 at Shop1 and Item2 at Shop2: $195 Question I need some hints which algorithms may help me to solve optimization problems of this kind for number of items about 100 and number of shops about 20. I already looked at apache-math and its optimization package, but I have no idea what algorithm to look for.

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• JSON to javaScript array

  - by saturn_research

  I'm having a problem handling JSON data within JavaScript, specifically in regards to using the data as an array and accessing and iterating through individual values. The JSON file is structured as follows: { "head": { "vars": [ "place" , "lat" , "long" , "page" ] } , "results": { "bindings": [ { "place": { "type": "literal" , "value": "Building A" } , "lat": { "datatype": "http://www.w3.org/2001/XMLSchema#float" , "type": "typed-literal" , "value": "10.3456" } , "long": { "datatype": "http://www.w3.org/2001/XMLSchema#float" , "type": "typed-literal" , "value": "-1.2345" } , "page": { "type": "uri" , "value": "http://www.example.com/a.html" } } , { "place": { "type": "literal" , "value": "Building B" } , "lat": { "datatype": "http://www.w3.org/2001/XMLSchema#float" , "type": "typed-literal" , "value": "11.3456" } , "long": { "datatype": "http://www.w3.org/2001/XMLSchema#float" , "type": "typed-literal" , "value": "-2.2345" } , "page": { "type": "uri" , "value": "http://www.example.com/b.html" } } , { "place": { "type": "literal" , "value": "Building C" } , "lat": { "datatype": "http://www.w3.org/2001/XMLSchema#float" , "type": "typed-literal" , "value": "12.3456" } , "long": { "datatype": "http://www.w3.org/2001/XMLSchema#float" , "type": "typed-literal" , "value": "-3.2345" } , "page": { "type": "uri" , "value": "http://www.example.com/c.html" } } ] } } I want to be able to convert this into a JavaScript array as follows in order that I can iterate through it and pull out the values for each location in order: var locations = [ ['Building A',10.3456,-1.2345,'http://www.example.com/a.html'], ['Building B',11.3456,-2.2345,'http://www.example.com/b.html'], ['Building C',12.3456,-3.2345,'http://www.example.com/c.html'] ]; Does anyone have any advice on how to achieve this? I have tried the following, but it picks up the "type" within the JSON, rather than just the value: $.each(JSONObject.results.bindings, function(i, object) { $.each(object, function(property, object) { $.each(object, function(property, value) { value; }); }); }); Any help, suggestions, advice or corrections would be greatly appreciated.

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• Problem with incomplete input when using Attoparsec

  - by Dan Dyer

  I am converting some functioning Haskell code that uses Parsec to instead use Attoparsec in the hope of getting better performance. I have made the changes and everything compiles but my parser does not work correctly. I am parsing a file that consists of various record types, one per line. Each of my individual functions for parsing a record or comment works correctly but when I try to write a function to compile a sequence of records the parser always returns a partial result because it is expecting more input. These are the two main variations that I've tried. Both have the same problem. items :: Parser [Item] items = sepBy (comment <|> recordType1 <|> recordType2) endOfLine For this second one I changed the record/comment parsers to consume the end-of-line characters. items :: Parser [Item] items = manyTill (comment <|> recordType1 <|> recordType2) endOfInput Is there anything wrong with my approach? Is there some other way to achieve what I am attempting?

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• ASP.Net event only being raised every other time?

  - by eftpotrm

  I have an ASP.Net web user control which represents a single entry in a list. To allow users to reorder the items, each item has buttons to move the item up or down the list. Clicking on one of these raises an event to the parent page, which then shuffles the items in the placeholder control. Code fragments from the list entry: Public Event UpClicked As System.EventHandler Protected Sub btnUp_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUp.Click RaiseEvent UpClicked(Me, New EventArgs()) End Sub And the parent container: rem (within the code to add an individual item to the placeholder) AddHandler l_oItem.UpClicked, AddressOf UpClicked Protected Sub UpClicked(ByVal sender As Object, ByVal e As EventArgs) MoveItem(DirectCast(sender, ScriptListItem), -1) End Sub It originally looked in testing like every other time the value for sender (verified by its properties) that reaches UpClicked is of an adjacent ListItem, not the one I've just clicked on - the first click is always wrong, then the second for the correct control. At present, testing appears to show that the button's click event is just being ignored every other time through. Breakpoints on the click events within the control simply aren't being hit, though the events are definitely being established. Why?

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• Scalability 101: How can I design a scalable web application using PHP?

  - by Legend

  I am building a web-application and have a couple of quick questions. From what I learnt, one should not worry about scalability when initially building the app and should only start worrying when the traffic increases. However, this being my first web-application, I am not quite sure if I should take an approach where I design things in an ad-hoc manner and later "fix" them. I have been reading stories about how people start off with an app that gets millions of users in a week or two. Not that I will face the same situation but I can't help but wonder, how do these people do it? Currently, I bought a shared hosting account on Lunarpages and that got me started in building and testing the application. However, I am interested in learning how to build the same application in a scalable-manner using the cloud, for instance, Amazon's EC2. From my understanding, I can see a couple of components: There is a load balancer that first receives requests and then decides where to route each request This request is then handled by a server replica that then processes the request and updates (if required) the database and sends back the response to the client If a similar request comes in, then a caching mechanism like memcached kicks into picture and returns objects from the cache A blackbox that handles database replication Specifically, I am trying to do the following: Setting up a load balancer (my homework revealed that HAProxy is one such load balancer) Setting up replication so that databases can be synchronized Using memcached Configuring Apache to work with multiple web servers Partitioning application to use Amazon EC2 and Amazon S3 (my application is something that will need great deal of storage) Finally, how can I avoid burning myself when using Amazon services? Because this is just a learning phase, I can probably do with 2-3 servers with a simple load balancer and replication but until I want to avoid paying loads of money accidentally. I am able to find resources on individual topics but am unable to find something that starts off from the big picture. Can someone please help me get started?

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• Userdefined margins in WPF printing

  - by MTR

  Most printing samples for WPF go like this: PrintDialog dialog = new PrintDialog(); if (dialog.ShowDialog() == true) { StackPanel myPanel = new StackPanel(); myPanel.Margin = new Thickness(15); Image myImage = new Image(); myImage.Width = dialog.PrintableAreaWidth; myImage.Stretch = Stretch.Uniform; myImage.Source = new BitmapImage(new Uri("pack://application:,,,/Images/picture.bmp")); myPanel.Children.Add(myImage); myPanel.Measure(new Size(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight)); myPanel.Arrange(new Rect(new Point(0, 0), myPanel.DesiredSize)); dialog.PrintVisual(myPanel, "A Great Image."); } What I don't like about this is, that they always set the margin to a fixed value. But in PrintDialog the user has the option to choose a individual margin that no sample cares about. If the user now selects a margin that is larger as the fixed margin set by program, the printout is truncated. Is there a way to get the user selected margin value from PrintDialog? TIA Michael

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• How to Implement Rich Document Editor for iPhone

  - by benjismith

  I'm just getting started on a new iPhone/iPad development project, and I need to display a document with rich styled text (potentially with embedded images). The user will touch the document, dragging to highlight individual words or multiline text spans. When the text is highlighted, a context menu will appear, letting them change the color of highlighting or add margin notes (or other various bits of structured metadata). If you're familiar with adding comments to a Word document (or annotating a PDF), then this is the same sort of thing. But in my case, the typical user will spend many many hours within the app, adding thousands (in some cases, tens of thousands) of small annotations to the central document. All of those bits of metadata will be stored locally awaiting synchronization with a remote web service. I've read other pieces of advice, where developers suggest creating a UIWebView control and passing it an HTML string. But that seems kind of clunky, especially with all the context-sensitivity that I want to include. Anyhow, I'm brand new to iPhone development and Objective-C, though I have ten years of software development experience, using a variety of languages on many different platforms, so I'm not worried about getting my hands dirty writing new functionality from scratch. But if anyone has experience building a similar kind of component, I'm interested in hearing strategies for enabling that kind of rich document markup and annotation.

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• how to diffrentiate between same field names of two tables in a select query??

  - by developer

  i have more than two tables in my database and all of them contains same field names like table A table B table C field1 field1 field1 field2 field2 field2 field3 field3 field3 . . . . . . . . . . . . I have to write a SELECT query which gets almost all same fields from these 3 tables.Iam using something like this :- select a.field1,a.field2,a.field3,b.field1,b.field2,b.field3,c.field1,c.field2,c.field3 from table A as a, table B as b,table C as c where so and so. but when i print field1's value it gives me the last table values. How can i get all the values of three tables with the same field names??? do i have to write individual query for every table OR there is any ways of fetching them all in a single query????

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• Dojo: Setting a CheckBox label programmatically

  - by Mitchell Flaherty

  Let me preface by saying that I saw this other question on the subject of CheckBox labels that was asked and answered well over a year ago. I was confused by the answers and am hoping that someone can clarify or that there has been new dojo functionality introduced since then that allows me to do this without resorting to HTML. So without further ado, I would like to know how to programmatically create labels for check boxes. I have a check box like so: this.pubBoxId = new dijit.form.CheckBox({ label: "IdChannel", checked: false, channel: that.idChannel }, that.name + "_PBI"); As you can see I've tried to edit the "label" field, but the label never actually shows up on the page. I have multiple CheckBoxes that I am adding to a ContentPane and simply want a label to the left or right of the check box. Is there any way I can do this without having to write separate HTML? Also, making a separate ContentPane for each individual label would be a big pain because of how many CheckBoxes I plan to have. Thank you for reading, and let me know if further clarification is needed!

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• Debugging instance of another thread altering my data

  - by Mick

  I have a huge global array of structures. Some regions of the array are tied to individual threads and those threads can modify their regions of the array without having to use critical sections. But there is one special region of the array which all threads may have access to. The code that accesses these parts of the array needs to carefully use critical sections (each array element has its own critical section) to prevent any possibility of two threads writing to the structure simultaneously. Now I have a mysterious bug I am trying to chase, it is occurring unpredictably and very infrequently. It seems that one of the structures is being filled with some incorrect number. One obvious explanation is that another thread has accidentally been allowed to set this number when it should be excluded from doing so. Unfortunately it seems close to impossible to track this bug. The array element in which the bad data appears is different each time. What I would love to be able to do is set some kind of trap for the bug as follows: I would enter a critical section for array element N, then I know that no other thread should be able to touch the data, then (until I exit the critical section) set some kind of flag to a debugging tool saying "if any other thread attempts to change the data here please break and show me the offending patch of source code"... but I suspect no such tool exists... or does it? Or is there some completely different debugging methodology that I should be employing.

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• is there something equivalent to 'Address of' or offset operator in .net?

  - by Gio

  We have nested stuctures as such, used as an interface for some device drivers. On occasion we have to update individual elements. An 'address of' operator would be helpful, but an 'offset' function or operator is what I'm really looking for, but not sure how to go about it. In other words, how far is structureN.elementX away from the start of the structure in bytes? [StructLayout(LayoutKind.Sequential)] public struct s1 { UInt16 elem1; UInt16 elem2; UInt16 elem3; } [StructLayout(LayoutKind.Sequential)] public struct s2 { UInt16 elem1; UInt16 elem2; UInt16 elem3; } [StructLayout(LayoutKind.Sequential)] public struct driver { public S1 s1; public S2 s2; } For instance we need to send the device driver some data to update driver.s1.elem3, by way of providing an offset address, data block and length. We would update our local copy, then call the device api with the afore mentioned data. Not sure I have to do this with 'unsafe' method calls. Any help?

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• How should approach allowing users to create notes with revisions?

  - by Magicked

  I'm working on a Rails project where I want to allow users to create individual notes, which are really just text fields at this time. With each note, the user can edit what they have previously written, but the old version is kept in a revision table. I'm trying to figure out the best way to approach this. My initial thoughts are to have the following relationships: class User < ActiveRecord::Base has_many :notes end class Note < ActiveRecord::Base has_many :note_revisions belongs_to :user end class NoteRevision < ActiveRecord::Base belongs_to :note_revision end The Note model will only contain a timestamp of when the note was first created. The NoteRevision model will contain the text, as well as a timestamp for each revision. This way, every time a new revision is made, a new entry is created into the NoteRevision table which is tracked through the Note table. Hopefully this makes sense! First, does this look like a good way to do this? If so, I'm having trouble figuring out how the controller and view will present this information in one form. Are there any good tutorials or has someone seen anything similar that can point me in the right direction? Thanks in advance!

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• java web templates across multiple WAR files

  - by Casey

  I have a multi WAR web application that was designed badly. There is a single WAR that is responsible for handling some authorization against a database and defines a standard web page using a jsp taglib. The main WAR basically checks the privileges of the user and than based on that, displays links to the context path of the other deployed WARS. Each of the other deployed WARs includes this custom tag lib. I am working on redesigning this application, and one of the nice things that I want to retain is that we have other project teams that have developed these WAR modules that "plug into" our current system to take advantage of other things we have to offer. I am not entirely sure how to handle the page templates though. I need a templating system that would be easy enough to use across multiple wars (I was thinking of jsp fragments??). I really only need to define a consistent header and main navigation section. Whatever else is displayed on the page is up to the individual web project. Any suggestions? I hope that this is clear, if not I can elaborate more.

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• Ultra-grand super acts_as_tree rails query

  - by Bloudermilk

  Right now I'm dealing with an issue regarding an intense acts_as_tree MySQL query via rails. The model I am querying is Foo. A Foo can belong to any one City, State or Country. My goal is to query Foos based on their location. My locations table is set up like so: I have a table in my database called locations I use a combination of acts_as_tree and polymorphic associations to store each individual location as either a City, State or Country. (This means that my table consists of the rows id, name, parent_id, type) Let's say for instance, I want to query Foos in the state "California". Beside Foos that directly belong to "California", I should get all Foos that belong every City in "California" like Foos in "Los Angeles" and "San Francisco". Not only that, but I should get any Foos that belong to the Country that "California" is in, "United States". I've tried a few things with associations to no avail. I feel like I'm missing some super-helpful Rails-fu here. Any advice?

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• Creating Modules for VB Program (Similar to firefox add on)

  - by Assimilater

  Hi all. I have a contact manager program that I'd like to design for multiple network marketing companies. My desired structure would include a core program which covers basic contact management functions. After that one could purchase a module for their specific network marketing company. This module would contain a variety of controls that the original program would need to be able to manipulate. Here is an example of what it would have to have: A group box containing buttons that link to a genealogy view, and the option to import one's donwnline from the back office provided by a company. A panel which is displayed on the contact page allowing the user to input business information or which will be filled by importing a downline from the back office: ie business ID, qualification level, sponsor information etc. a panel displayed when one searches for contacts on the contact list page which allows the user to sort based on information such as when they joined, what their business id is and so forth. a panel which is displayed in a personal business overview page which presents to an individual how many people in their downline are at each qualification level and develop a mailing list for individuals of a certain qualification level. I have the code developed to perform all these functions, I just wanted to give you an example of what needed to be done. I'm thinking that what I'm trying to create is a library that one can download and the program will recognize, but I'm not really sure where to go. What I'm really trying to do is figure out what kind of file I can make that will contain all this code and the GUI information that the program will recognize. Any ideas? With thanks, John

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• Problem: Movie Clip contains just one frame

  - by Doug

  I'm a newbie at Flash, so started playing with a pretty standard code sample: one layer contains a movie clip with a flying rectangle, another layer has a button to control it. All script code is in Main.as file. The rectangle was named square1 through the Property window. Here is the problem: the constructor for Main has a line: square1.stop(); to prevent clip from playing, but it doesn't help - it plays. I know the constructor fires, because it has trace("stuff") in it. The code does check that the stage has been created. What strange is that square1.currentFrame always returns 1, and square1.totalFrames returns 1 as well. The layer has 24 frames on the timeline. I tried a tween with just 2 keyframes, then converted whole tween into frames - same result. I mean, the thing is flying before my eyes, how can it be 1 frame??? I even added a listener: square1.addEventListener(Event.ENTER_FRAME, onFrameChange); The event fires all the time, i.e. the frames change, but currentFrame is still 1. Also, tried to name individual frames and use square1.gotoAndStop("begin") and stuff like that. Nothing helps. I am really stuck with this stupid problem.

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• Is there a way for -webkit-animtion-timing-function to apply to the entire animation instead of each keyframe?

  - by Ken Sykora

  I'm a bit new to animation, so forgive me if I'm missing a huge concept here. I need to animate an arrow that is pointing to a point on a curve, let's just say it's a cubic curve for the sake of this post. The arrow moves along the curve's line, always pointing a few pixels below it. So what I did, is I setup keyframes along the curve's line using CSS3: @-webkit-keyframes ftch { 0% { opacity: 0; left: -10px; bottom: 12px; } 25% { opacity: 0.25; left: 56.5px; bottom: -7px; } 50% { opacity: 0.5; left: 143px; bottom: -20px; } 75% { opacity: 0.75; left: 209.5px; bottom: -24.5px; } 100% { opacity: 1; left: 266px; bottom: -26px; } } However, when I run this animation using -webkit-animation-timing-function: ease-in, it applies that easing to each individual keyframe, which is definitely not what I want. I want the easing to apply to the entire animation. Is there a different way that I should be doing this? Is there some property to apply the easing to the entire sequence rather than each keyframe?

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• Screenscraping and reverse engineering health based web tool

  - by ArbInv

  Hi There is a publicly available free tool which has been built to help people understand the impact of various risk factors on their health / life expectancy. I am interested in understanding the data that sits behind the tool. To get this out it would require putting in a range of different socio-demographic factors and analyzing the resulting outputs. This would need to be done across many thousand different individual profiles. The tool was probably built on some standard BI platorm. I have no interest in how the tool was built but do want to get to the data within it. The site has a Terms of Use Agreement which includes: Not copying, distribute, adapt, create derivative works of, translate, or otherwise modify the said tool Not decompile, disassemble, reverse assemble, or otherwise reverse engineer the tool. The said institution retains all rights, title and interest in and to the Tool, and any and all modifications thereof, including all copyright, copyright registrations, trade secrets, trademarks, goodwill and confidential and proprietary information related thereto. Would i be in effect breaking the law if i were to point a screen scraping tool which downloaded the data that sits behind the tool in question?? Any advice welcomed? THANKS

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• Compressing a database to a single file?

  - by Assimilater

  Hi all. In my contact manager program I have been storing information by reading and writing comma delimited files for each individual contact, and storing notes in a file for each note, and I'm wondering how I could go about shrinking them all into one file effectively. I have attempted using data entry tools in the visual studio toolbox and template class, though I have never quite figured out how to use them. What would be especially convenient is if I could store data as data type IOwner (a class I created) as opposed to strings. I'd also need to figure out how to tell the program what to do when a file is opened (I've noticed in the properties how to associate a file type with the program though am not sure how to tell it what to do when it's opened). Edit: How about rephrasing the question: I have a class IContact with various properties some of them being lists of other class objects. I have a public list of IContact. Can I write Contacts as List(Of IContact) to a file as opposed to a bunch of strings? Second part of the question: I have associated .cms files with my program. But if a user opens the file, what code should the program run through in an attempt to deal with the file? This file is going to contain data that the program needs to read, how do I tell it to read a file when the program is opened vicariously because the file was opened? Does this make the question clearer?

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• Loop elements with Jquery and call Omniture s.tl() function to track

  - by ilovewebdev

  Hi, i have a page with a list of items. Each item has a print now link (a.printMe) to print each item. At the end of the list, there's a print all link (a.printAll) to print all items. I want to track number of times an item was printed. If a.printAll link is clicked, then i will send all the item's tracking value to Omniture. I added tracking string into individual item's a.printMe href attribute and track with the following functions: $('a.printMe').click(function() { var value = $(this).attr('href'); track(value); }); $('a.printAll').click(function() { $('a.printMe').each(function() { this.click(); }); // works in IE only. IE 6-8 }); function track(value) { var s = s_gi('account'); s.prop10 = value; s.linkTrackVars = 'prop10'; s.tl(true, 'o'); } The problem is only the last item (in the list) has its value sent to Omniture when i clicked on a.printAll. I finally got the above to work in IE but not Firefox. Anyone encounter this before?

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• Scientific Data processing(Graph comparison and interpretation)

  - by pinkynobrain

  Hi stackoverflow friends, I'm trying to write a program to automate one of my more boring and repetative work tasks. I have some programming experience but none with processing or interpreting large volumes of data so i am seeking your advice(both suggestions of techneques to try and also things to read to learn more about doing this stuff). I have a piece of equipment that monitors an experiment by taking repeated samples and displays the readings on its screen as a graph. The input of experiment can be altered and one of these changes should produce a change in a section of the graph which i currently identify by eye and is what im looking for in the experiment. I want to automate it so that a computer looks at a set of results and spots the experiment input that causes the change. I can already extract the results from the machine. Currently they results for a run are in the form of an integer array with the index being the sample number and the corresponding value being the measurement. The overall shape of the graph will be similar for each experiment run. The change im looking for will be roughly the same and will occur in approximatly the same place every time for the correct experiment input. Unfortunatly there are a few gotcha's that make this problem more difficult. There is some noise in the measuring process which mean there is some random variation in the measured values between different runs. Although the overall shape of the graph remains the same. The time the experiment takes varies slightly each run causing two effects. First, the a whole graph may be shifted slightly on the x axis relative to another runs graph. Second, individual features may appear slightly wider or narrower in different runs. In both these cases the variation isn't particularly large and you can assume that the only non random variation is caused by the correct input being found. Thank you for your time, Pinky

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• Nested Routes Show Action: What objects does it expect?

  - by NoahClark

  Here is the relevant line from my rake routes: client_note GET /clients/:client_id/notes/:id(.:format) notes#show When I try passing in the objects like <%= client_note_path([client, @notes.first]) %>> I get: No route matches {:action=>"show", :controller=>"notes", :client_id=>[#<Client id: 5, ... , #<Note id: 9, ...]} Which made me think to try a client ID. So, I tried: <%= client_note_path([client.id, @notes.first]) %> which gives me: No route matches {:action=>"show", :controller=>"notes", :client_id=>[5, #<Note id: 9,content: "He just bought a brand new bobcat, be sure to charg...", client_id: 5, created_at: "2012-06-11 16:18:16", updated_at: "2012-06-11 16:18:16">]} Which, made me want to try just passing in a client ID. <%= client_note_path(client.id) %> No route matches {:action=>"show", :controller=>"notes", :client_id=>5} Still not what I'm looking for. I want to be able to show an individual note which can normally be found at a url like looks like: http://localhost:3000/clients/2/notes/3/

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• extract out text in each line and put it in seperate variables with javascript

  - by user357034

  I have the following address which is in a paragraph with no great way to select the individual text areas within. I do not have access to this code. I want to extract out each line and put the text values in a variable for each type. Not sure what would be the best way to do it. Use .split('<br>') ? then use .split('&nbsp;') to separate the state from the zip same with city and state I am a little lost here. Here are the variables I would like. company name, person's name, address1, city, state, country, zip code, phone, Here is the paragraph that i have. I do not need the '(Residential Address)' <p> XYZ Inc<br> John&nbsp;Smith<br> 555 Anywhere Street<br> New York, NY&nbsp;11150<br> United States<br> 212-555-1212<br> (Residential Address) </p>

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• Rationale in selecting Hash Key type

  - by Amrish

  Guys, I have a data structure which has 25 distinct keys (integer) and a value. I have a list of these objects (say 50000) and I intend to use a hash table to store/retrieve them. I am planning to take one of these approaches. Create a integer hash from these 25 integer keys and store it on a hash table. (Yeah! I have some means to handle collisions) Make a string concatenation on the individual keys and use it as a hash key for the hash table. For example, if the key values are 1,2,4,6,7 then the hash key would be "12467". Assuming that I have a total of 50000 records each with 25 distinct keys and a value, then will my second approach be a overkill when it comes to the cost of string comparisons it needs to do to retrieve and insert a record? Some more information! Each bucket in the hash table is a balanced binary tree. I am using the boost library's hash_combine method to create the hash from the 25 keys.

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• parsing python to csv

  - by user185955

  I'm trying to download some game stats to do some analysis, only problem is each season the data their isn't 100% consistent. I grab the json file from the site, then wish to save it to a csv with the first line in the csv containing the heading for that column, so the heading would be essentially the key from the python data type. #!/usr/bin/env python import requests import json import csv base_url = 'http://www.afl.com.au/api/cfs/afl/' token_url = base_url + 'WMCTok' player_url = base_url + 'matchItems/round' def printPretty(data): print(json.dumps(data, sort_keys=True, indent=2, separators=(',', ': '))) session = requests.Session() # session makes it simple to use the token across the requests token = session.post(token_url).json()['token'] # get the token session.headers.update({'X-media-mis-token': token}) # set the token Season = 2014 Roundno = 4 if Roundno<10: strRoundno = '0'+str(Roundno) else: strRoundno = str(Roundno) # get some data (could easily be a for loop, might want to put in a delay using Sleep so that you don't get IP blocked) data = session.get(player_url + '/CD_R'+str(Season)+'014'+strRoundno) # print everything printPretty(data.json()) with open('stats_game_test.csv', 'w', newline='') as csvfile: spamwriter = csv.writer(csvfile, delimiter="'",quotechar='|', quoting=csv.QUOTE_ALL) for profile in data.json()['items']: spamwriter.writerow(['%s' %(profile)]) #for key in data.json().keys(): # print("key: %s , value: %s" % (key, data.json()[key])) The above code grabs the json and writes it to a csv, but it puts the key in each individual cell next to the value (eg 'venueId': 'CD_V190'), the key needs to be just across the first row as a heading. It gives me a csv file with data in the cells like this Column A B 'tempInCelsius': 17.0 'totalScore': 32 'tempInCelsius': 16.0 'totalScore': 28 What I want is the data like this tempInCelsius totalScore 17 32 16 28 As I mentioned up the top, the data isn't always consistent so if I define what fields to grab with spamwriter.writerow([profile['tempInCelsius'], profile['totalScore']]) then it will error out on certain data grabs. This is why I'm now trying the above method so it just grabs everything regardless of what data is there.

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