Re: TK-grid problem, please help
Hertha Steck wrote: > Hello, > > Ray schrieb: > >> Hi, Thanks for the help. >> >> >> I was trying to find a book "Python TK" something on last Friday. >> but didn't find it :-) >> > > There is only one printed book, all the details here: > > http://wiki.python.org/moin/GuiBooks > > HTH > Hertha This is inaccurate. There is only one book listed in the wiki. Python Programming by Mark Lutz has an excellent Tkinter section as well as an *incredible* amount of other information. Also, it has recently been updated. It is probably the most relevant book for making a complete transition from novice python programmer to expert python programmer. James -- http://mail.python.org/mailman/listinfo/python-list
Re: TK-grid problem, please help
Hi Anton, Thanks again. This is what I need! my problem already solved. Ray Anton Vredegoor wrote: > Ray wrote: > >> hi, I have a question about how to use .grid_forget (in python/TK) >> >> I need to work on grid repeatly. everytime when a button is pressed, >> the rows of grid is different. such like, first time, it generate 10 >> rows of data. >> 2nd time, it maybe only 5 rows. so I need a way to RESET the grid data >> every time. how can I do it? by grid_forger()?, then would anyone can >> help on >> how to use grid_forget() >> the sample code as following: > > I'm not sure if it solves your problem but this modification of your > code at least *looks* like it works better. The entries are completely > destroyed so that the next time you call the function they can be > recreated. > > The trick I am using is to use a list in the arguments of the function > but that is a bit of a hack, the list 'remembers' its state from the > last time the function was called, I think one should use classes for > bookkeeping such things instead. > > from Tkinter import * > > def mygrid(text,M = []): > how to use grid_forget() to clean the grid??### > while M: > x = M.pop() > x.destroy() > rows = [] > count=int(text) > for i in range(count): > cols = [] > for j in range(4): > e = Entry(frame3, relief=RIDGE) > M.append(e) > e.grid(row=i, column=j, sticky=NSEW) > e.insert(END, '%d.%d' % (i, j)) > cols.append(e) > rows.append(cols) > > > root=Tk() > > frame1=Frame(root, width=150, height=100) > frame1.pack() > > text=Entry(frame1) > text.pack(side=LEFT) > > button=Button(frame1, text='generate grid', command=(lambda: > mygrid(text.get( > > button.pack() > > frame2=Frame(root, width=150, height=100) > frame2.pack() > > button2=Button(frame2, text='exit', command=root.quit) > button2.pack() > > frame3=Frame(root, width=150, height=300) > frame3.pack() > > root.mainloop() > > A. -- http://mail.python.org/mailman/listinfo/python-list
Re: TK-grid problem, please help
Hello, Ray schrieb: > Hi, Thanks for the help. > > > I was trying to find a book "Python TK" something on last Friday. > but didn't find it :-) > There is only one printed book, all the details here: http://wiki.python.org/moin/GuiBooks HTH Hertha -- http://mail.python.org/mailman/listinfo/python-list
Re: TK-grid problem, please help
Hi, Thanks for the help.
I was trying to find a book "Python TK" something on last Friday.
but didn't find it :-)
I know those codes are in poor design, because I wrote those sample code
to show the idea about what I need. the real code is working with mysql.
however, I'm really new in python. (I start learning it on last Wednesday).
Thanks again for the help!
Ray
James Stroud wrote:
>
>
> Using grid_forget() is probably optimization overkill, but may be handy
> for slower computers where you can watch the widgets appear one by one
> (older than about 5 years--for example original mac ibook). Also, you
> should get a good book on Tkinter because your design here will pretty
> difficult to maintain and is not very flexible.
>
> But...if you want to know how it might be done with grid_forget using
> the code you already have (i.e. making widgets only if necessary):
>
>
> #START#
> from Tkinter import *
> from tkMessageBox import showerror
> def mygrid(text):
> how to use grid_forget() to clean the grid??###
> numrows = len(frame3.rows)
> try:
> count=int(text)
> except:
> showerror('Entry Error',
> '''Hey, "%s" don't make an int, Fool!''' % text,
> parent=frame3)
> return 'break'
> for i in range(count):
> if i < numrows:
> cols = frame3.rows[i]
> else:
> cols = [Entry(frame3, relief=RIDGE) for j in range(4)]
> frame3.rows.append(cols)
> for j in range(4):
> e = cols[j]
> e.grid(row=i, column=j, sticky=NSEW)
> e.delete(0,END)
> e.insert(END, '%d.%d' % (i, j))
> for i in range(i+1, numrows):
> for e in frame3.rows[i]:
> e.grid_forget()
>
>
> root=Tk()
>
> frame1=Frame(root, width=150, height=100)
> frame1.pack()
>
> text=Entry(frame1)
> text.pack(side=LEFT)
>
> button=Button(frame1, text='generate grid', command=(lambda:
> mygrid(text.get(
>
> button.pack()
>
> frame2=Frame(root, width=150, height=100)
> frame2.pack()
>
> button2=Button(frame2, text='exit', command=root.quit)
> button2.pack()
>
> frame3=Frame(root, width=150, height=300)
> # adding an attribute here
> frame3.rows = []
> frame3.pack()
>
> root.mainloop()
> #END#
>
> Notice also the necessity for the "e.delete(0, END)" line to get the
> desired text in the entries.
>
> Also demonstrated is how to handle poor input.
>
> *Note*
> Remember to always call the user "Fool" when he does something stupid.
>
>
> James
--
http://mail.python.org/mailman/listinfo/python-list
Re: TK-grid problem, please help
Hi, Thanks for the help! Anton Vredegoor wrote: > Ray wrote: > >> hi, I have a question about how to use .grid_forget (in python/TK) >> >> I need to work on grid repeatly. everytime when a button is pressed, >> the rows of grid is different. such like, first time, it generate 10 >> rows of data. >> 2nd time, it maybe only 5 rows. so I need a way to RESET the grid data >> every time. how can I do it? by grid_forger()?, then would anyone can >> help on >> how to use grid_forget() >> the sample code as following: > > I'm not sure if it solves your problem but this modification of your > code at least *looks* like it works better. The entries are completely > destroyed so that the next time you call the function they can be > recreated. > > The trick I am using is to use a list in the arguments of the function > but that is a bit of a hack, the list 'remembers' its state from the > last time the function was called, I think one should use classes for > bookkeeping such things instead. > > from Tkinter import * > > def mygrid(text,M = []): > how to use grid_forget() to clean the grid??### > while M: > x = M.pop() > x.destroy() > rows = [] > count=int(text) > for i in range(count): > cols = [] > for j in range(4): > e = Entry(frame3, relief=RIDGE) > M.append(e) > e.grid(row=i, column=j, sticky=NSEW) > e.insert(END, '%d.%d' % (i, j)) > cols.append(e) > rows.append(cols) > > > root=Tk() > > frame1=Frame(root, width=150, height=100) > frame1.pack() > > text=Entry(frame1) > text.pack(side=LEFT) > > button=Button(frame1, text='generate grid', command=(lambda: > mygrid(text.get( > > button.pack() > > frame2=Frame(root, width=150, height=100) > frame2.pack() > > button2=Button(frame2, text='exit', command=root.quit) > button2.pack() > > frame3=Frame(root, width=150, height=300) > frame3.pack() > > root.mainloop() > > A. -- http://mail.python.org/mailman/listinfo/python-list
Re: TK-grid problem, please help
Ray wrote:
> hi, I have a question about how to use .grid_forget (in python/TK)
>
> I need to work on grid repeatly. everytime when a button is pressed,
> the rows of grid is different. such like, first time, it generate 10
> rows of data.
> 2nd time, it maybe only 5 rows. so I need a way to RESET the grid data
> every time. how can I do it? by grid_forger()?, then would anyone can
> help on
> how to use grid_forget()
> the sample code as following:
>
> #begin of program###
>
> from Tkinter import *
> def mygrid(text):
> how to use grid_forget() to clean the grid??###
> rows = []
> count=int(text)
> for i in range(count):
> cols = []
> for j in range(4):
> e = Entry(frame3, relief=RIDGE)
> e.grid(row=i, column=j, sticky=NSEW)
> e.insert(END, '%d.%d' % (i, j))
> cols.append(e)
> rows.append(cols)
>
>
> root=Tk()
>
> frame1=Frame(root, width=150, height=100)
> frame1.pack()
>
> text=Entry(frame1)
> text.pack(side=LEFT)
>
> button=Button(frame1, text='generate grid', command=(lambda:
> mygrid(text.get(
>
> button.pack()
>
> frame2=Frame(root, width=150, height=100)
> frame2.pack()
>
> button2=Button(frame2, text='exit', command=root.quit)
> button2.pack()
>
> frame3=Frame(root, width=150, height=300)
> frame3.pack()
>
> root.mainloop()
>
> #end of program###
Using grid_forget() is probably optimization overkill, but may be handy
for slower computers where you can watch the widgets appear one by one
(older than about 5 years--for example original mac ibook). Also, you
should get a good book on Tkinter because your design here will pretty
difficult to maintain and is not very flexible.
But...if you want to know how it might be done with grid_forget using
the code you already have (i.e. making widgets only if necessary):
#START#
from Tkinter import *
from tkMessageBox import showerror
def mygrid(text):
how to use grid_forget() to clean the grid??###
numrows = len(frame3.rows)
try:
count=int(text)
except:
showerror('Entry Error',
'''Hey, "%s" don't make an int, Fool!''' % text,
parent=frame3)
return 'break'
for i in range(count):
if i < numrows:
cols = frame3.rows[i]
else:
cols = [Entry(frame3, relief=RIDGE) for j in range(4)]
frame3.rows.append(cols)
for j in range(4):
e = cols[j]
e.grid(row=i, column=j, sticky=NSEW)
e.delete(0,END)
e.insert(END, '%d.%d' % (i, j))
for i in range(i+1, numrows):
for e in frame3.rows[i]:
e.grid_forget()
root=Tk()
frame1=Frame(root, width=150, height=100)
frame1.pack()
text=Entry(frame1)
text.pack(side=LEFT)
button=Button(frame1, text='generate grid', command=(lambda:
mygrid(text.get(
button.pack()
frame2=Frame(root, width=150, height=100)
frame2.pack()
button2=Button(frame2, text='exit', command=root.quit)
button2.pack()
frame3=Frame(root, width=150, height=300)
# adding an attribute here
frame3.rows = []
frame3.pack()
root.mainloop()
#END#
Notice also the necessity for the "e.delete(0, END)" line to get the
desired text in the entries.
Also demonstrated is how to handle poor input.
*Note*
Remember to always call the user "Fool" when he does something stupid.
James
--
http://mail.python.org/mailman/listinfo/python-list
Re: TK-grid problem, please help
Ray wrote: > hi, I have a question about how to use .grid_forget (in python/TK) > > I need to work on grid repeatly. everytime when a button is pressed, > the rows of grid is different. such like, first time, it generate 10 > rows of data. > 2nd time, it maybe only 5 rows. so I need a way to RESET the grid data > every time. how can I do it? by grid_forger()?, then would anyone can > help on > how to use grid_forget() > the sample code as following: I'm not sure if it solves your problem but this modification of your code at least *looks* like it works better. The entries are completely destroyed so that the next time you call the function they can be recreated. The trick I am using is to use a list in the arguments of the function but that is a bit of a hack, the list 'remembers' its state from the last time the function was called, I think one should use classes for bookkeeping such things instead. from Tkinter import * def mygrid(text,M = []): how to use grid_forget() to clean the grid??### while M: x = M.pop() x.destroy() rows = [] count=int(text) for i in range(count): cols = [] for j in range(4): e = Entry(frame3, relief=RIDGE) M.append(e) e.grid(row=i, column=j, sticky=NSEW) e.insert(END, '%d.%d' % (i, j)) cols.append(e) rows.append(cols) root=Tk() frame1=Frame(root, width=150, height=100) frame1.pack() text=Entry(frame1) text.pack(side=LEFT) button=Button(frame1, text='generate grid', command=(lambda: mygrid(text.get( button.pack() frame2=Frame(root, width=150, height=100) frame2.pack() button2=Button(frame2, text='exit', command=root.quit) button2.pack() frame3=Frame(root, width=150, height=300) frame3.pack() root.mainloop() A. -- http://mail.python.org/mailman/listinfo/python-list
TK-grid problem, please help
hi, I have a question about how to use .grid_forget (in python/TK) I need to work on grid repeatly. everytime when a button is pressed, the rows of grid is different. such like, first time, it generate 10 rows of data. 2nd time, it maybe only 5 rows. so I need a way to RESET the grid data every time. how can I do it? by grid_forger()?, then would anyone can help on how to use grid_forget() the sample code as following: #begin of program### from Tkinter import * def mygrid(text): how to use grid_forget() to clean the grid??### rows = [] count=int(text) for i in range(count): cols = [] for j in range(4): e = Entry(frame3, relief=RIDGE) e.grid(row=i, column=j, sticky=NSEW) e.insert(END, '%d.%d' % (i, j)) cols.append(e) rows.append(cols) root=Tk() frame1=Frame(root, width=150, height=100) frame1.pack() text=Entry(frame1) text.pack(side=LEFT) button=Button(frame1, text='generate grid', command=(lambda: mygrid(text.get( button.pack() frame2=Frame(root, width=150, height=100) frame2.pack() button2=Button(frame2, text='exit', command=root.quit) button2.pack() frame3=Frame(root, width=150, height=300) frame3.pack() root.mainloop() #end of program### -- http://mail.python.org/mailman/listinfo/python-list
