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  • Should I be using abstract methods in this Python scenario?

    - by sfjedi
    I'm not sure my approach is good design and I'm hoping I can get a tip. I'm thinking somewhere along the lines of an abstract method, but in this case I want the method to be optional. This is how I'm doing it now... from pymel.core import * class A(object): def __init__(self, *args, **kwargs): if callable(self.createDrivers): self._drivers = self.createDrivers(*args, **kwargs) select(self._drivers) class B(A): def createDrivers(self, *args, **kwargs): c1 = circle(sweep=270)[0] c2 = circle(sweep=180)[0] return c1, c2 b = B() In the above example, I'm just creating 2 circle arcs in PyMEL for Maya, but I fully intend on creating more subclasses that may or may not have a createDrivers method at all! So I want it to be optional and I'm wondering if my approach is—well, if my approach could be improved?

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  • Python. Draw rectangle in basemap

    - by user2928318
    I need to add several rectangles in my basemap. I nee four rectangles with lat and log ranges as below. 1) llcrnrlon=-10, urcrnrlon=10, llcrnrlat=35,urcrnrlat=60 2) llcrnrlon=10.5, urcrnrlon=35, llcrnrlat=35,urcrnrlat=60 3) llcrnrlon=35.5, urcrnrlon=52, llcrnrlat=30,urcrnrlat=55 4) llcrnrlon=-20, urcrnrlon=35, llcrnrlat=20,urcrnrlat=34.5 My script is below. I found "polygon" packages to add lines but I do not exactly know how to do. Please help me!! Thanks a lot for your help in advance! from mpl_toolkits.basemap import Basemap m=basemaputpart.Basemap(llcrnrlon=-60, llcrnrlat=20, urcrnrlon=60, urcrnrlat=70, resolution='i', projection='cyl', lon_0=0, lat_0=45) lon1=np.array([[-180.+j*0.5 for j in range(721)] for i in range(181)]) lat1=np.array([[i*0.5 for j in range(721)] for i in range(181) ]) Nx1,Ny1=m(lon1,lat1,inverse=False) toplot=data[:,:] toplot[data==0]=np.nan toplot=np.ma.masked_invalid(toplot) plt.pcolor(Nx1,Ny1,np.log(toplot),vmin=0, vmax=5) cbar=plt.colorbar() m.drawcoastlines(zorder=2) m.drawcountries(zorder=2) plt.show()

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  • Surface Area of a Spheroid in Python

    - by user3678321
    I'm trying to write a function that calculates the surface area of a prolate or oblate spheroid. Here's a link to where I got the formulas (http://en.wikipedia.org/wiki/Prolate_spheroid & http://en.wikipedia.org/wiki/Oblate_spheroid). I think I've written them wrong, but here is my code so far; from math import pi, sqrt, asin, degrees, tanh def checkio(height, width): height = float(height) width = float(width) lst = [] if height == width: r = 0.5 * width surface_area = 4 * pi * r**2 surface_area = round(surface_area, 2) lst.append(surface_area) elif height > width: #If spheroid is prolate a = 0.5 * width b = 0.5 * height e = 1 - a / b surface_area = 2 * pi * a**2 * (1 + b / a * e * degrees(asin**-1(e))) surface_area = round(surface_area, 2) lst.append(surface_area) elif height < width: #If spheroid is oblate a = 0.5 * height b = 0.5 * width e = 1 - b / a surface_area = 2 * pi * a**2 * (1 + 1 - e**2 / e * tanh**-1(e)) surface_area = round(surface_area, 2) lst.append(surface_area, 2) return lst

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  • Extract IP address from an html string (python)

    - by GoJian
    My Friends, I really want to extract a simple IP address from a string (actually an one-line html) using Python. But it turns out that 2 hours passed I still couldn't come up with a good solution. >>> s = "<html><head><title>Current IP Check</title></head><body>Current IP Address: 165.91.15.131</body></html>" -- '165.91.15.131' is what I want! I tried using regular expression, but so far I can only get to the first number. >>> import re >>> ip = re.findall( r'([0-9]+)(?:\.[0-9]+){3}', s ) >>> ip ['165'] In fact, I don't feel I have a firm grasp on reg-expression and the above code was found and modified from elsewhere on the web. Seek your input and ideas!

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  • Autorelease and properties

    - by ganuke
    I have few questions to ask about the following class #import <Cocoa/Cocoa.h> @interface SomeObject { NSString *title; } @property (retain) NSString *title; @end implementation SomeObject @synthesize title; -(id)init { if (self=[super init]) { self.title=[NSString stringWithFormat:@"allyouneed"]; } return self; } -(void)testMethod{ self.title=[[NSString alloc] init] ; } -(void)dealloc { self.title=nil; [super dealloc]; } In the .h file do we need to declare the title and sub when we add the property. is it not enough to add the @property (retain) NSString *title; line. 2.Do i need to autorelease both assignment to title in the init and testMethod. if So why? Can some one explain these things to me.

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  • C# sqlite query results to list<string>

    - by jakesankey
    Guys, I'm struggling. I have query against my db that returns a single column of data and I need to set it as List. Here is what I am working with and I am getting an error about converting void to string. public static void GetImportedFileList() { using (SQLiteConnection connect = new SQLiteConnection(@"Data Source=C:\Documents and Settings\js91162\Desktop\CMMData.db3")) { connect.Open(); using (SQLiteCommand fmd = connect.CreateCommand()) { SQLiteCommand sqlComm = new SQLiteCommand(@"SELECT DISTINCT FileName FROM Import"); SQLiteDataReader r = sqlComm.ExecuteReader(); while (r.Read()) { string FileNames = (string)r["FileName"]; List<string> ImportedFiles = new List<string>(); } connect.Close(); } } } THEN LATER IN THE APPLICATION List<string> ImportedFiles = GetImportedFileList() // Method that gets the list of files from the db foreach (string file in files.Where(fl => !ImportedFiles.Contains(fl)))

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  • C# IF statement against SQLite query result

    - by jakesankey
    I have a C# application that I am attempting to check my sqlite db if a filename already exists in the FileName column, if it DOESN'T exist, execute some code.. Here is what I am working with. string[] files = Directory.GetFiles(@"C:\Documents and Settings\js91162\Desktop ", "R303717*.txt*", SearchOption.AllDirectories); foreach (string file in files) { string FileNameExt1 = Path.GetFileName(file); insertCommand.CommandText = @" SELECT * FROM Import WHERE FileName == FileNameExt1;"; } string contYes = insertCommand.ExecuteNonQuery(); if (string.IsNullOrEmpty(contYes)) { //more code } EDIT: added space in path so that slash doesn't eat quotation mark

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  • how to protect an imported win32 dll into a .net application from memory issues

    - by Eric
    I have a c# application that needs to use a legacy win32 dll. The dll is almost its own app, it has dialogs, operations with hardware, etc. When this dll is imported and used, there are a couple of problems that occur: Dragging a dialog (not a windows system dialog, but one created by the dll) across the managed code app causes the UI to not repaint. Further it generates a system out of memory exception from various ui controls. The performance is incredibly slow. There seems to be no way to unload the dll so the memory never gets cleaned up. When we close our managed app, we get another memory exception. At the moment we import each method call as such: [DllImport("dllname.dll", EntryPoint = "MethodName", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]

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  • How Do I Update a Table From Another Table Only If the Result Count is 1?

    - by Russ Bradberry
    I have a table of 2 tables in a one to many relationship. I want to run an update script that will update the table with the FK of the related table only if there is one result (because if there is multiple then we need to decide which one to use, in another method) Here is what I have so far: UPDATE import_hourly_event_reports i SET i.banner_id = b.banner_id FROM banner b JOIN plan p ON b.plan_id = p.id WHERE b.campain_id = i.campaign_id AND b.size_id = i.size_id AND p.site_id = i.site_id HAVING COUNT(b.banner_id) = 1 As you can see, the HAVING clause doesn't quite work as I'd expect it. I only want to update the row in the import table with the id of the banner from the banner table if the count is equal to 1.

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  • Is there a browser independet bookmarktool supporting tags, date and free comments?

    - by bernd_k
    I am looking for a tool, which helps me to organize my personal bookmarks. I want to be able to assign tags and free comments to a bookmark. I want to search my bookmarks by tags date of bookmarking pattern in title pattern in url It would be nice to be web based to enable sharing my bookmarks between different machines. But for it would be OK, if it works on a single machine as long as it has some import/export way to transfer the links to a new machine replacing the old. As browsers I'm using Firefox and ChromePlus. It would be nice, if the solution works with both browsers. With free comments, I mean additional remarks stored for a bookmark, which is not essential for searching.

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  • Construct Numpy index given list of starting and ending positions

    - by Abiel
    I have two identically-sized numpy.array objects (both one-dimensional), one of which contains a list of starting index positions, and the other of which contains a list of ending index positions (alternatively you could say I have a list of starting positions and window lengths). In case it matters, the slices formed by the starting and ending positions are guaranteed to be non-overlapping. I am trying to figure out how to use these starting and ending positions to form an index for another array object, without having to use a loop. For example: import numpy as np start = np.array([1,7,20]) end = np.array([3,10,25]) Want to reference somearray[1,2,7,8,9,20,21,22,23,24])

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  • Problem in packages in importing in Eclipse

    - by user384706
    Hi (I am using Galileo), I am trying to import some existing projects into Eclipse. The structures for their packages is: Project/ /src /java /a /b /c Once imported in the package explorer I see: Project src/java --a --b --c - AClass.java This is ok, since the classes e.g. AClass.java are defined in package: a.b.c But in one project the structure (once imported) becomes: Project src --java --a --b --c - AClass.java And that causes the error that AClass.java is defined to be in package a.b.c but it is actually under java.a.b.c Why is this happening? Why in this specific project java is not ignored as part of package? Thanks

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  • Mixing expressions and expression language (<%= %> inside of c:if)

    - by Jack
    I need to access some constants in my jsp, and sadly the EL does not offer any functionality for it. There are some options like the unstandard tag library, but I'd like to keep it a bit more standard. I tried: <%@ page import = "com.jackdane.Constants"%> <c:if test="${object.display == '<%=com.jackdane.Constants.YES %>}'"> //some display logic </c:if> But that doesn't appear to do the trick. It's been a while since I've used an expression so I might have made an error. Any input is appreciated. Edit: To clarify, the constants class is not in my control. It's inside a jar file that I recieved. It contains no getters/setters. Just private static final Strings.

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  • Can you make a python script behave differently when imported than when run directly?

    - by futuraprime
    I often have to write data parsing scripts, and I'd like to be able to run them in two different ways: as a module and as a standalone script. So, for example: def parseData(filename): # data parsing code here return data def HypotheticalCommandLineOnlyHappyMagicFunction(): print json.dumps(parseData(sys.argv[1]), indent=4) the idea here being that in another python script I can call import dataparser and have access to dataParser.parseData in my script, or on the command line I can just run python dataparser.py and it would run my HypotheticalCommandLineOnlyHappyMagicFunction and shunt the data as json to stdout. Is there a way to do this in python?

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  • Django template context not working with imported class

    - by Andy Hume
    I'm using Django's templating on appengine, and am having a problem whereby a class I'm importing from another package is not correctly being made available to the template context. Broadly speaking, this is the code. The prop1 is not available in the template in the first example below, but is in the second. MyClass is identical in both cases. This does not work: from module import MyClass context = MyClass() self.response.out.write(template.render(path, context)) This does: class MyClass(object): def __init__(self): self.prop1 = "prop1" context = MyClass() self.response.out.write(template.render(path, context)) If I log the context in the above code I get: <module.MyClass object at 0x107b1e450> when it's imported, and: <__main__.MyClass object at 0x103759390> when it's defined in the same file. Any clues as to what might cause this kind of behaviour?

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  • Eclipse content assist with maven project not picking up all classes

    - by thickosticko
    I'm using Eclipse 3.5.0, and have imported a maven project using the import maven project from SCM wizard (M2 plugin). I have a jar file as a dependency in my pom. and inside the jar is a complicated schema - with quite a number of XSD's. But the content assist doesn't seem to pick up the schema at all, nor a number of other classes in the dependency list. yet for another module in the same project it seems to work ok. Does anyone know why this is? it's driving me mad!

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  • I get a "TypeError: Error #1009: Cannot access a property or method of a null object reference." error on my AIR project for using a button.

    - by Xcore
    So my problem here is, I'm working on my Adobe Air project, so I decided to code some buttons to be able to navigate. The problem here is that I get a error for trying to do so. Here is my code. import flash.events.MouseEvent; this.stop(); play_btn.addEventListener(MouseEvent.MOUSE_DOWN, playButtonClick); function playButtonClick(evt:MouseEvent) { gotoAndPlay(337); } I do not see what is wrong actually, I tried this on a blank non-AIR file, and it worked well. Thanks for helping!

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  • Load class based on SDK version

    - by Bostjan
    Is there any way I can load a class based on what version of the OS the phone is running? For example: I made an app which requires 1.6+ Android. Is there a way for me to load one class or the other based on what OS the phone is running? I'm asking this specifically for contacts. The database was changed from 1.6 to 2.0 and the old version doesn't retrieve contacts on the new OS phone. I'd still like to keep my 1.6 requirement, but at the same time I'd like 2.0+ phones to access the contact part of the app. So can I make 2 APIs, somehow pack them with the app and decide on the fly which I choose to import?

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  • How do I convert a Python list of lists of lists into a C array by using ctypes?

    - by pc05
    As seen here How do I convert a Python list into a C array by using ctypes? this code will take a python array and transform it to a C array. import ctypes arr = (ctypes.c_int * len(pyarr))(*pyarr) Which would the way of doing the same with a list of lists or a lists of lists of lists? For example, for the following variable list3d = [[[40.0, 1.2, 6.0, 0.3], [50.0, 4.2, 0, 0]], [[40.0, 1.2, 6.0, 0.3], [50.0, 4.2, 0, 0]], [[40.0, 1.2, 6.0, 0.3], [50.0, 4.2, 0, 0]]] I have tried the following with no luck: ([[ctypes.c_double * 4] *2]*3)(*list3d) # *** TypeError: 'list' object is not callable (ctypes.c_double * 4 *2 *3)(*list3d) # *** TypeError: expected c_double_Array_4_Array_2 instance, got list Thank you! EDIT: Just to clarify, I am trying to get one object that contains the whole multidimensional array, not a list of objects. This object's reference will be an input to a C DLL that expects a 3D array.

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  • Importing Liferay portlet into Eclipse IDE

    - by jyo
    Hi I haved created a portlet through plugins SDK and wanted to import that into the eclipse ,but it did not imported as it is , But after creating the portlet if i give " ant setup-eclipse " then the project get imported into the eclipse .i have searched for this almost 2 days then i found the solution .. How do i know what all the commands i have in ant . like in the API i will have all the methods where i can see there and get on with my coding work ,how with ant ? how do i know wat all the commands i need to implement ? Thanks

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  • identify the input that is multiple of 11 and odd or even java

    - by Bolor Ch
    i am trying to write code to determine the nature of input using if statement only. The nature of input could be following: a multiple of 11 even or odd. For the code below, when I enter my input, it does not display the result as "input:NOT:ODD". Also how can I check multiple conditions with if statement? (else is not considered) import java.util.Scanner; public class test { public static void main( String args[] ) { Scanner input = new Scanner( System.in ); int x; int EO; int Mult; System.out.print ( "Enter value: " ); x = input.nextInt(); EO = x % 2; Mult = x % 11; if (EO > 0 && Mult > 0) { System.out.printf ("%d:NOT:ODD"); } } }

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  • Files mapping architecture

    - by user326198
    I need to know How I can achieve this goal by classes : we have two different applications in the company (App1 , App2) Appl can export xml with know items ( ID , Name) we need app2 to import this data but App2 display different items (CarID, CarName) and this items defined like this with the mapping info <CarID> <Mapping name="ID"/> </CarID> <CarNAme> <Mapping name="Name"/> </CarNAme>" How I can achieve this as classes or ARCHITECTURE , i will develop this with c# I need one interface because we may support different type of files not just xml

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  • Why are Java primitive types' modifiers `public`, `abstract`, & `final`?

    - by oconnor0
    In the process of doing some reflection on Java types, I came across an oddity that I do not understand. Inspecting int for its modifiers returns public, abstract, and final. I understand public and final, but the presence of abstract on a primitive type is non-obvious to me. Why is this the case? Edit: I am not reflecting on Integer but on int: import java.lang.reflect.Modifier; public class IntegerReflection { public static void main(final String[] args) { System.out.println(String.format("int.class == Integer.class -> %b", int.class == Integer.class)); System.out.println(String.format("int.class modifiers: %s", Modifier.toString(int.class.getModifiers()))); System.out.println(String.format("Integer.class modifiers: %s", Modifier.toString(Integer.class.getModifiers()))); } } The output when run: int.class == Integer.class -> false int.class modifiers: public abstract final Integer.class modifiers: public final

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  • Gmail,Yahoo, Facebook, Twitter contacts importer in PHP

    - by Arjun
    Which is the greatest, cheapest application in PHP that I can buy to import Gmail, Yahoo, MSN, Facebook, Twitter contacts from my user's accounts if they wish to invite their friends? I have gone through: http://www.improsys.com/importer.htm http://www.octazen.com/demo.php and http://www.iplussoft.com/product/iplusinvite_pricing Octazen looks awesome but wants excess of $320 for an all in solution. I don't want to spend that much. All you PHP programmers out there you may have needed to build of integrate a similar app, I need to know which is the best PHP readymade app for this? Any help would be appreciated and I'll smile with each answer - this should be your biggest incentive to find me something amazing :)

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  • wxpython : button covers all in the frame

    - by Prakash
    Below is my code: #!/usr/bin/python # -*- coding: utf-8 -*- import wx class Example(wx.Frame): def __init__(self): #super(Example, self).__init__(parent, title=title, size=(300, 200)) wx.Frame.__init__(self, None, wx.ID_ANY, 'wxButton', pos=(300, 150), size=(320, 250)) self.button1 = wx.Button(self, id=-1, label='Button1', pos=(8, 8), size=(10, 20)) self.button1.Bind(wx.EVT_BUTTON, self.button1Click) self.Centre() self.Show() def button1Click(self,event): #self.button1.Hide() self.SetTitle("Button1 clicked") if __name__ == '__main__': app = wx.App() Example() app.MainLoop() Actually I am expecting the button1 on the frame to have a look like a button - a bit raised and be placed in center of frame - but it is just expanding to the full frame. Also text Button1 looks like a text which does not has a button look like feeling? What wrong am I doing?

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