Mailman 3 May 2003 - Edu-sig

looking for help with Jython...
by luby liao 25 Jul '03

25 Jul '03

Jeffrey, try this: 1. change first line to public class Vehicle { 2. shell> javac Vehicle.java 3. shell> jython [liao@zen tmp]$ jython Jython 2.1 on java1.3.1 (JIT: null) Type "copyright", "credits" or "license" for more information. >>> import Vehicle >>> v = Vehicle(3,5,6) >>> v Vehicle@3f1179 >>> cheers, Luby > I'm in the middle of learning some Java to get ready for next year's AP > CSC course. I would like to make good use of the Python my students > already know, and I was thinking that Jython might offer some > interesting educational opportunities. > > What I would most like to be able to do is to import Java classes into > Python in order to be able to "play around" with them in the > interpreter. So far, I have not been able to make this work. I'm > starting with a simple example from our book: > > > class Vehicle { > public int passengers; > public int fuelcap; > public int mpg; > > public Vehicle(int p, int f, int m) { > passengers = p; > fuelcap = f; > mpg = m; > } > > public int range() { > return mpg * fuelcap; > } > > public double fuelneeded(int miles) { > return (double) miles / mpg; > } > } > > (Actually, I added all the "public"s because otherwise Jython couldn't > see them when I did: > > import Vehicle > > How can I create a Vehicle object inside of Jython? > > Thanks! >

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re: edu-sig pages again
by Arthur 27 May '03

27 May '03

>I asked what you thought of adding a second page primarily of links, >including to CS + Python related pages, and I pointed you to an >example. I'll add this page to python.org when I get the time, >which should be soon. I guess with the right emphasis and an introductory paragraph or two, maybe hihglighting an item or two from the list, it should be a good step in the direction I am advocating. Do you know why Numeric is not on the software list? Or pyVTK? Just as a few, for examples. Art

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the edu-sig page, again
by Arthur 27 May '03

27 May '03

>From this morning's python-list: """ Date: 26 May 2003 22:32:57 -0700 From: pythonguy(a)Hotpop.com (Anand Pillai) Subject: Re: State of Python You might be right. When I talked about bookstores, I did not include virtual bookstores. The best way to popularise a language is to teach it in undergrad courses in engineering/science colleges. It is not happening with python in India. From IIT Madras where I graduated, they teach C/Delphi in introductory computer science courses. Python seems to be making some inroads in colleges teaching bioinformatics, as a competitor to Perl. """ The assertion that "the best way to popularise a language is to teach it in undergrad courses in enigineering/science" has, to me, 3 implications. 1) Python is in good stead. It is my feeling that it is in exactly this realm where Python is likely to shine. I say "is likely to" because I have not personally attended such a course. I am confident it does or/and could, in practice. 2) For those who see Python's popularization as a mission, concentration of efforts in this area should have clear and tangible effect, and therefore some priority. 3) It would be sensible, in connection with efforts toward the popularization of Python, for python.org to give focus to the promotion of such activities - which makes the content of the edu-sig page - for those who are interested in the popularization of Python - an important resource. Which is why I am continue to try to instigate some discussion and some activity in the rethinking of the design and content of the edu-sig page. It's actually a quite significant piece of business, it seems to me - that is at least for those interested in the popularization of Python. Art

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a Help for MATE algorithm...
by Mohamad CHAITOU 27 May '03

27 May '03

Hi All, I need some help concerning the MATE algorithm, if anybody can help me and send me some simulation code for this algorithm (I need to compare its performance with the OpIATE algorithm) Thanks in advance

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Python Help - Thanks
by Randy Latimer 20 May '03

20 May '03

One of my students is working on a Python + Tkinter in order to construct a "Drawing" program. class base - constructs the entire window for her drawing interface class panel - constructs a vertical tool bar on the left side of the interface. Functions will exist for Circle, Square, Triangle, Color, Rotate, Erase, Pen class easel - constructs the drawing portion of the window. Here's the problem: She's defining a a DrawCircle function in class easel (the drawing canvas) The button for "Circle" is defined in the "panel" - tool bar. She's trying to call the DrawCircle function when she left clicks on the Circle button. But nothing happens now when the Circel button is pressed. Thanks for any advice out there - Randy Latimer, rlatimer(a)tjhsst.edu Here's the program, "Vers3.py" from Tkinter import * import sys #class of the geometric figures. Base is the frame it's called in class base(Frame): def __init__(self, parent=None): Frame.__init__(self, parent) self.pack() self.Makebase() def Makebase(self): panel(self).pack(side=LEFT) easel(self).pack(side=RIGHT) class panel(Frame): def __init__(self, parent=Frame, **config): Frame.__init__(self, parent, config) MyCanvas = Canvas() MyEasel = easel(MyCanvas) self.pack(side = TOP, fill = BOTH) self.MakeGUI(MyEasel,MyCanvas) def MakeGUI(self,MyEasel,MyCanvas): Circle = Button (self,text = "Circle") #creates the #button on the root frame Circle.pack(side = TOP,fill = X, anchor = N) #'packs' the button, putting it on the frame and # specifying resizing options Circle.bind('<Button-1>', self.circle(self, MyEasel, MyCanvas)) # registers mouse event and sends it to the circle() # function Square = Button (self, text = "Square") Square.pack(side = TOP, fill = X, anchor = N) Square.bind('<Button-1>', self.square) Triangle = Button (self, text = "Triangle") Triangle.pack(side = TOP, fill = X, anchor = N) Triangle.bind('<Button-1>', self.triangle) Color = Button (self, text = "Color") Color.pack(side = TOP, fill = X, anchor = N) Color.bind('<Button-1>', self.color) Rotate = Button (self, text = "Rotate") Rotate.pack(side = TOP, fill = X, anchor = N) Rotate.bind('<Button-1>', self.rotate) Erase = Button (self, text = "Erase") Erase.pack(side = TOP, fill = X, anchor = N) Erase.bind('<Button-1>', self.erase) Pen = Button (self, text = "Pen") Pen.pack(side = TOP, fill = X, anchor = N) Pen.bind('<Button-1>', self.pen) def circle(self, event, MyEasel, MyCanvas): MyEasel.DrawCircle(MyCanvas) #print "eventually I'll draw a circle but for now # I just quit" #import sys; sys.exit() #kills windows def square(self, event): print "eventually I'll draw a square but for now I just quit" import sys; sys.exit() #kills windows def triangle(self, event): print "eventually I'll draw a triangle but for now I just quit" import sys; sys.exit() #kills windows def color(self, event): print "eventually I'll change colors but for now I just quit" import sys; sys.exit() #kills windows def rotate(self, event): print "eventually I'll rotate objects but for now I just quit" import sys; sys.exit() #kills windows def erase(self, event): print "eventually I'll erase but for now I just quit" import sys; sys.exit() #kills windows def pen(self, event): print "eventually I'll draw with a pen but for now I just quit" import sys; sys.exit() #kills windows class easel(Canvas): def __init__(self, parent=Frame, **config): Canvas.__init__(self, parent, config) self.pack(side = TOP, fill = BOTH, expand = YES) canvas = Canvas(self, width = 500, height=200, bg = 'white') canvas.config(scrollregion =(0,0,500,2000)) sbar = Scrollbar(self) sbar.config(command = canvas.yview) canvas.config(yscrollcommand=sbar.set) sbar.pack(side = RIGHT, fill=Y) canvas.pack(side = RIGHT, expand = YES, fill = BOTH) self.canvas = canvas def DrawCircle(self, canvas): canvas.create_oval(10,20,200,200,width=2,fill="blue") if __name__ == '__main__': base().mainloop()

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Re: Edu-sig digest, Vol 1 #689 - 1 msg
by Darren Payne 20 May '03

20 May '03

I tend to agree with Arthur in most respects. However, being a high school teache, I would like to see significant resources for high school level study. For me this crosses over into the university level since I work at a slective or magnet school (as most Americans would know them). In addition, I would like to see resources for using PyGame. I have found this is highly motivating for the younger to middle high school student. Plus, for those students who find programming diffifult, I have found they put in a heck more effort when PyGame is involved. --- edu-sig-request(a)python.org wrote: > Send Edu-sig mailing list submissions to > edu-sig(a)python.org > > To subscribe or unsubscribe via the World Wide Web, > visit > http://mail.python.org/mailman/listinfo/edu-sig > or, via email, send a message with subject or body > 'help' to > edu-sig-request(a)python.org > > You can reach the person managing the list at > edu-sig-admin(a)python.org > > When replying, please edit your Subject line so it > is more specific > than "Re: Contents of Edu-sig digest..." > > > Today's Topics: > > 1. the edu-sig page (Arthur) > > --__--__-- > > Message: 1 > Date: Mon, 19 May 2003 09:19:55 -0400 > From: Arthur <ajsiegel(a)optonline.net> > To: edu-sig(a)python.org > Subject: [Edu-sig] the edu-sig page > > I've noticed that Kirby seems to have undertaken the > webmaster role for the > edu-sig page. > > I also understand that there is some movement toward > a basic revamping of > the python.org pages. > > All, is my understanding, related to the promoting > Python charge. > > Is discussion of possiblities for a revamped edu-sig > page fair game for > discussion? > > My view, in a nutshell, is a refocus, to at least > better highlight Python's > role at the University level - in CS, introductory > programming for Science > majors, the study of algorythmics, etc. > > The activity in these realms is, at this list > indicates, substantial - > though one gets very little hint of it at the > edu-sig page. > > The CP4E, and programming for children aspect, > should be an addendum, rather > than a focus, IMO. > > In the end, the edu-sig page should be a resource to > which someone hoping to > introduce at the University level, might send > doubtful colleagues for > information and reinforcement. > > My view is that the current edu-sig page is in fact > counterproudctive in > this respect - giving a less than serious view of > Python's potential role in > education. > > ART > > > > > --__--__-- > > _______________________________________________ > Edu-sig mailing list > Edu-sig(a)python.org > http://mail.python.org/mailman/listinfo/edu-sig > > > End of Edu-sig Digest ===== regards Darren Payne Hurlstone Agricultural High School Ph: 9829 9222 Fax: 98292026 email: computing(a)hurlstone.com.au __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com

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Creating a tutorial
by Conrad Koziol 20 May '03

20 May '03

Hey I was wondering ig you guys have a tutorial for making web forums in python and if you could point me to it

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re: edu-sig pages
by Arthur 20 May '03

20 May '03

Toby writes - >I don't know if focusing on pre-university education is counterproductive, >but it would be helpful to have educational information spanning the >spectrum of learning. I am certainly not taking a position that Python is not potentially useful at the pre-University level. But as a practical matter, at that level, there are few educators with enough discretion in establishing curriculum that would allow them to find a place for Python. There is more freedom at the higher education level, and as the list Kirby is compiling seems to indicate, that is where there is substantial and diverse activity in respect to the use of Python. Seems to me the edu-sig page should better reflect that reality. >I think it's useful to distinguish between two kinds of university-level >programming: > - computer science students > - everyone else >I think the impact will be more significant if the focus is on "everyone >else". This includes students in the sciences, arts, and humanities. As a non-CS type myself, I tend to agree. The approach I would recommend is highlighting of "success stories" upfront. But those would not be stories related directly to the use of Python in the classroom. Rather, it would highlight the real world use of Python in problemsolving, focused on activities that have an academic aspect or flavor. e.g. The development of Numeric at Lawrence Livermore and its utilization there. Other examples of the use of Python at major research facilities - I know there are a number of such examples. In AI research and study. And such like. Art

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RE: the edu-sig page
by Toby Donaldson 19 May '03

19 May '03

> Is discussion of possiblities for a revamped edu-sig page fair game for > discussion? > > My view, in a nutshell, is a refocus, to at least better > highlight Python's > role at the University level - in CS, introductory programming for Science > majors, the study of algorythmics, etc. > > The activity in these realms is, at this list indicates, substantial - > though one gets very little hint of it at the edu-sig page. > > The CP4E, and programming for children aspect, should be an > addendum, rather > than a focus, IMO. > > In the end, the edu-sig page should be a resource to which > someone hoping to > introduce at the University level, might send doubtful colleagues for > information and reinforcement. > > My view is that the current edu-sig page is in fact counterproudctive in > this respect - giving a less than serious view of Python's > potential role in > education. I don't know if focusing on pre-university education is counterproductive, but it would be helpful to have educational information spanning the spectrum of learning. I think it's useful to distinguish between two kinds of university-level programming: - computer science students - everyone else I think the impact will be more significant if the focus is on "everyone else". This includes students in the sciences, arts, and humanities. Toby

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the edu-sig page
by Arthur 19 May '03

19 May '03

I've noticed that Kirby seems to have undertaken the webmaster role for the edu-sig page. I also understand that there is some movement toward a basic revamping of the python.org pages. All, is my understanding, related to the promoting Python charge. Is discussion of possiblities for a revamped edu-sig page fair game for discussion? My view, in a nutshell, is a refocus, to at least better highlight Python's role at the University level - in CS, introductory programming for Science majors, the study of algorythmics, etc. The activity in these realms is, at this list indicates, substantial - though one gets very little hint of it at the edu-sig page. The CP4E, and programming for children aspect, should be an addendum, rather than a focus, IMO. In the end, the edu-sig page should be a resource to which someone hoping to introduce at the University level, might send doubtful colleagues for information and reinforcement. My view is that the current edu-sig page is in fact counterproudctive in this respect - giving a less than serious view of Python's potential role in education. ART

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