Re: [Tutor] Tkinter: no module named messagebox (brandon w)
> I have tried to follow the tutorial I found here: > > Python 2.7 Tutorial > http://www.youtube.com/watch?v=uh6AdDX7K7U > > This is what I have done so far: > > #!/usr/bin/python > > from Tkinter import * > import Tkinter.MessageBox I figured I might as well, given how I recently had to learn about this, give you a heads up on imports. The format "from module import * " is not a very good idea: it makes your code harder to read (as the reader has to inspect each and every barename to check whether it's actually assigned locally OR comes from the deuced *). To quote the Zen of Python; "namespaces are a honking great idea -- let's do more of those!". You can import modules with several different syntaxes: import importable import importable1, importable2, ..., importableN import importable as preferred_name Here importable is usually a module such as collections, but could be a package or module in a package, in which case each part is separated with a dot, for example os.path. The first two syntaxes are the simplest and also the safest because they avoid the possibility of having name conflicts, since they force us to always use fully qualified names. The third syntax allows us to give a name of our choice to the package or module we are importing. Theoretically, this could lead to name clashes, but in practice the "import importable as" syntax is used to avoid them. There are some other import syntaxes: from importable import object as preferred_name from importable import object1, object2, ..., objectN from importable import (object1, object2, ..., objectN) from importable import * In the last syntax, the * means "import everything that is not private", which in practical terms means either that every object in the module is imported except for those whose names begin with a leading underscore, or, if the module has a global __all__ variable that holds a list of names, that all the objects in the __all__ variable are imported. The from importable import * syntax imports all the objects from the module (or all the modules from the package) -- this could be hundreds of names. In the case of from os.path import *, almost 40 names are imported, including "dirname", "exists", and "split", any of which might be names we would prefer to use for our own variables or functions. For example, if we write from os.path import dirname we can conveniently call dirname() without qualification. But if further on in our code we write dirname = "." the object reference dirname will now be bound to the string "." instead of to the dirname() function, so if we try calling dirname() we will get a TypeError exception because dirname now refers to a string, and we can't call strings. However, given that Tkinter is such a huge package to begin with, I'd say that you should continue to use from Tkinter import *, but be aware of what you're doing when you type that, and that there is a certain risk of conflicts. best regards, Robert S. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Tkinter: no module named messagebox (brandon w)
On Aug 14, 2011 2:12 AM, "Robert Sjoblom" wrote: > > However, given that Tkinter is such a huge package to begin with, I'd > say that you should continue to use from Tkinter import *, but be > aware of what you're doing when you type that, and that there is a > certain risk of conflicts. Also, most (all?) Tkinter names are uppercase, such as Button, Label, etc. Of course I personally I usually do import Tkinter as tk Which means I only have to type 3 extra characters, but it removes any ambiguity - tk.Something had to come from Tkinter, and never something that I defined. I suppose it's really all about trade-offs, and what you find works best, or whatever the prevailing convention is when you're working with others. -Wayne ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] python
I have made a small program but I would like to know how to write or. There
is multiple choice answer.
Good=raw_input("Good to hear")
ok=raw_input("Good good")
Bad=raw_input("Oh dear")
I would only like the person using the program to be able to pick one.
Thanks
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Re: [Tutor] Tkinter: no module named messagebox (brandon w)
On 14/08/11 14:07, Wayne Werner wrote: Of course I personally I usually do import Tkinter as tk Which means I only have to type 3 extra characters, but it removes any ambiguity - tk.Something had to come from Tkinter Thats exactly what I tend to do nowadays. I used to use the import * method for tkinter but eventually I got bit by a name clash and it took too long to realize the problem so I now use the "import as tk" shortcut except for very short scripts - usually just for tests or experiments.. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] (no subject)
I would like this script to only have a choice of one these. I'm not sure
how to do it. My example would be when someone types Good next to print how
I want it to reply Thats nice. Anyone know how and if I am making more
mistakes point them out please.
How=("How are you today: ")
print How
Good=('Thats nice')
good=raw_input(Good)
Good=raw_input(Good)
Ok=('Good good')
Ok=raw_input(Ok)
ok=raw_input(Ok)
Bad=('Oh dear')
Bad=raw_input(Bad)
bad=raw_input(Bad)
Thanks
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Re: [Tutor] (no subject)
je.rees e-mail wrote: I would like this script to only have a choice of one these. I'm not sure how to do it. My example would be when someone types Good next to print how I want it to reply Thats nice. Anyone know how and if I am making more mistakes point them out please. Consider this example: def test(): prompt = "Please type 'Thats nice'" answer = raw_input(prompt) if answer == "Thats nice": print "You have typed it accurately" else: print "I'm sorry, you have made a mistake" Paste that into the interactive interpreter, then run: test() and follow the instructions. Does that help? -- Steven ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] python
On 08/14/2011 09:04 AM, je.rees e-mail wrote:
I have made a small program but I would like to know how to write or.
There is multiple choice answer.
Good=raw_input("Good to hear")
ok=raw_input("Good good")
Bad=raw_input("Oh dear")
I would only like the person using the program to be able to pick one.
Thanks
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Why not writing the program and running it to see what happens?
try something like this:
good = raw_input("Did you have a nice day? ")
if good == "yes":
print "I'm glad you had a nice day."
else:
print "Sorry to hear that."
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Re: [Tutor] python
On Sun, Aug 14, 2011 at 8:04 AM, je.rees e-mail wrote:
> I have made a small program but I would like to know how to write or. There
> is multiple choice answer.
> Good=raw_input("Good to hear")
> ok=raw_input("Good good")
> Bad=raw_input("Oh dear")
> I would only like the person using the program to be able to pick one.
>
> Thanks
>
You might want to try something like this...
def ask():
ans = raw_input("Please enter (g)ood, (o)k or (b)ad: ")
if ans == "g" or ans == "good":
print "Good to hear"
elif ans == "o" or ans == "ok":
print "Good good"
elif ans == "b" or ans == "bad":
print "Oh dear"
else:
print "Incorrect choice"
ask()
And here's how it works...
>>> ask()
Please enter (g)ood, (o)k or (b)ad: b
Oh dear
>>> ask()
Please enter (g)ood, (o)k or (b)ad: o
Good good
>>> ask()
Please enter (g)ood, (o)k or (b)ad: ok
Good good
Or you could also use something a bit more general like this...
def ask(question, list_of_responses):
ans = raw_input(question)
return list_of_responses[int(ans)]
>>> ask("(0)Good (1)OK (2)Bad: ", ["Good to hear", "Good good", "Oh dear"])
(0)Good (1)OK (2)Bad: 0
'Good to hear'
--
Jack Trades
Pointless Programming Blog
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[Tutor] Moveable and Animated Sprites
Is there a more Pythonic way to create the class "MoveableAnimatedSheetSprite" I am using multiple inheritance but I see that I am really loading the image twice when I call __init__ for "AnimatedSheetSprite" and "MoveableSprite". Should I just make a moveable class and have moveable items inherit it with out inheriting from "Sprite"? By the way the code does work as intended right now. Thank you in advance, if you need more code or what ever just let me know. import pygame from vec2d import * class Sprite(pygame.sprite.Sprite): """This defines a sprite that is a single image in a file that only contains it as an image.""" def __init__(self, imageName, startx=0, starty=0): pygame.sprite.Sprite.__init__(self) self.image=pygame.image.load(imageName) self.rect=self.image.get_rect() self.image.convert() self.x=startx self.y=starty self.position=vec2d(self.x,self.y) self.selected=False def update(self): pygame.sprite.Sprite.update(self) class AnimatedSheetSprite(Sprite): """This defines a sprite that is multiple images but is in a image file that has only it's images.""" def __init__(self, imageName, startx=0, starty=0, height=0, width=0): Sprite.__init__(self, imageName, startx, starty) self.images=[] masterWidth, masterHeight=self.image.get_size() for i in xrange(int(masterWidth/width)): self.images.append(self.image.subsurface((i*width,0,width,height))) self.image=self.images[0] self.maxFrame=len(self.images)-1 self.frame=0 def animate(self): if self.frame < self.maxFrame: self.frame=self.frame+1 else: self.frame=0 self.image=self.images[self.frame] def update(self): Sprite.update(self) self.animate() class MoveableSprite(Sprite): """This defines a sprite that is a single image in a file that only contains it as an image. But this sprite can move.""" def __init__(self, imageName, startx=0, starty=0, targetx=0, targety=0, speed=2): Sprite.__init__(self, imageName, startx, starty) self.target=vec2d(targetx,targety) self.speed=speed def move(self): self.direction=self.target-self.position if self.direction.length > self.speed: self.position= self.position+self.speed def update(self): Sprite.update(self) self.move() class MoveableAnimatedSheetSprite(MoveableSprite, AnimatedSheetSprite): """This defines a sprite that is multiple images but is in a image file that has only it's images. But this sprite can move.""" def __init__(self, imageName, startx=0, starty=0,targetx=0, targety=0, speed=2, height=0, width=0): MoveableSprite.__init__(self, imageName, startx, starty, targetx, targety, speed) AnimatedSheetSprite.__init__(self, imageName, startx, starty, height, width) def update(self): MoveableSprite.update(self) AnimatedSheetSprite.update(self) -- Jordan Farrell ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
