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()
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