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P: 18
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code1 ok -
from Tkinter import *
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from functools import partial
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fields = 'Name', 'Job', 'Pay'
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def fetch(entries,event):
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for entry in entries:
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print 'Input => "%s"' % entry.get()
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print event
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def makeform(root, fields):
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entries = []
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for field in fields:
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row = Frame(root)
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lab = Label(row, width=5, text=field)
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ent = Entry(row)
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row.pack(side=TOP, fill=X)
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lab.pack(side=LEFT)
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ent.pack(side=RIGHT, expand=YES, fill=X)
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entries.append(ent)
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return entries
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if __name__ == '__main__':
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root = Tk()
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ents = makeform(root, fields)
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root.bind('<Return>', partial(fetch,ents))
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root.mainloop()
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code2 fail i don't understand why ? -
from Tkinter import *
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from functools import partial
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fields = 'Name', 'Job', 'Pay'
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def fetch(entries,event):
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for entry in entries:
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print 'Input => "%s"' % entry.get()
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print event
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def makeform(root, fields):
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entries = []
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for field in fields:
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row = Frame(root)
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lab = Label(row, width=5, text=field)
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ent = Entry(row)
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row.pack(side=TOP, fill=X)
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lab.pack(side=LEFT)
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ent.pack(side=RIGHT, expand=YES, fill=X)
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entries.append(ent)
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return entries
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if __name__ == '__main__':
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root = Tk()
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ents = makeform(root, fields)
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root.bind('<Return>', partial(fetch,entries=ents))
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root.mainloop()
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code3: fail i know the reason -
from Tkinter import *
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from functools import partial
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fields = 'Name', 'Job', 'Pay'
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def fetch(event,entries):
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for entry in entries:
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print 'Input => "%s"' % entry.get()
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print event
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-
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def makeform(root, fields):
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entries = []
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for field in fields:
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row = Frame(root)
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lab = Label(row, width=5, text=field)
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ent = Entry(row)
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row.pack(side=TOP, fill=X)
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lab.pack(side=LEFT)
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ent.pack(side=RIGHT, expand=YES, fill=X)
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entries.append(ent)
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return entries
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if __name__ == '__main__':
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root = Tk()
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ents = makeform(root, fields)
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root.bind('<Return>', partial(fetch,ents))
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root.mainloop()
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code4: ok -
from Tkinter import *
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from functools import partial
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fields = 'Name', 'Job', 'Pay'
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def fetch(event,entries):
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for entry in entries:
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print 'Input => "%s"' % entry.get()
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print event
-
-
-
def makeform(root, fields):
-
entries = []
-
for field in fields:
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row = Frame(root)
-
lab = Label(row, width=5, text=field)
-
ent = Entry(row)
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row.pack(side=TOP, fill=X)
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lab.pack(side=LEFT)
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ent.pack(side=RIGHT, expand=YES, fill=X)
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entries.append(ent)
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return entries
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if __name__ == '__main__':
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root = Tk()
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ents = makeform(root, fields)
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root.bind('<Return>', partial(fetch,entries=ents))
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root.mainloop()
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there are four codes,code1,code4 it's ok,i know why;
code2,code3,it's not ok,i understand why code2 can't work,
would you mind to tell me why code3 can't work??
the output is:
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1413, in __call__
return self.func(*args)
TypeError: fetch() got multiple values for keyword argument 'entries'
i don't understand it.
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