here is my code ,it can run ,i want to make it simpler,
to change three sentences to one, xb =Button(root, text='Fetch') xb.pack(side=LEFT) xb.bind("<Button-1>", partial(fetch, entries=ents)) i write: Button(root, text='Fetch',command=partial(fetch, entries=ents)).pack(side=LEFT) that is to change code1 into code2 ,when you click the button"fetch",the output is : TypeError: fetch() takes exactly 2 arguments (1 given) how to revise it? code1:(it's ok) from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(event, entries): for entry in entries: print 'Input => "%s"' % entry.get() print event.widget def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch, entries=ents)) xb =Button(root, text='Fetch') xb.pack(side=LEFT) xb.bind("<Button-1>", partial(fetch, entries=ents)) root.mainloop() code2: from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(event, entries): for entry in entries: print 'Input => "%s"' % entry.get() print event.widget def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch, entries=ents)) Button(root, text='Fetch',command=partial(fetch, entries=ents)).pack(side=LEFT) root.mainloop() _______________________________________________ Tkinter-discuss mailing list [hidden email] http://mail.python.org/mailman/listinfo/tkinter-discuss |
Hi,
Thus spoketh "守株待兔" <[hidden email]> unto us on Thu, 25 Aug 2011 11:34:04 +0800: > here is my code ,it can run ,i want to make it simpler, > to change three sentences to one, > xb =Button(root, text='Fetch') > xb.pack(side=LEFT) > xb.bind("<Button-1>", partial(fetch, entries=ents)) If you want to make your code simpler, I suggest a different approach. Your problem appears to be the way arguments are passed to the fetch() callback. It would be much easier to handle if you did not have to pass the list of Entry widgets to the callback, then your fetch() function could look like: def fetch(event=None): (...code...) With this trick you can use the same callback as a Button command and as a callback with bind() without any additional headaches. The entry list could be stored globally or (better) you create a class based on a Tkinter.Frame that contains all the Entries and make the fetch () callback a class method. A simple example on how to create a custom subclass of Frame can be found here: http://www.java2s.com/Code/Python/GUI-Tk/SubclassFrameanduseit.htm (and if you want to save two lines, omit this example's make_widgets() method and just put the stuff from make_widgets() into __init__() ;) Regards Michael .-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-. Madness has no purpose. Or reason. But it may have a goal. -- Spock, "The Alternative Factor", stardate 3088.7 _______________________________________________ Tkinter-discuss mailing list [hidden email] http://mail.python.org/mailman/listinfo/tkinter-discuss |
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