python tkinter输入表单

"""
use StringVar variables
lay out by columns: this might not align horizontally everywhere (see entry2)
"""

from tkinter import *
from quitter import Quitter
fields = 'Name', 'Job', 'Pay'

def fetch(variables):
for variable in variables:
print('Input => "%s"' % variable.get()) # get from var

def makeform(root, fields):
form = Frame(root) # make outer frame
left = Frame(form) # make two columns
rite = Frame(form)
form.pack(fill=X)
left.pack(side=LEFT)
rite.pack(side=RIGHT, expand=YES, fill=X) # grow horizontal

variables = []
for field in fields:
    lab = Label(left, width=5, text=field)      # add to columns
    ent = Entry(rite)
    lab.pack(side=TOP)
    ent.pack(side=TOP, fill=X)                  # grow horizontal
    var = StringVar()
    ent.config(textvariable=var)                # link field to var
    var.set('enter here')
    variables.append(var)
return variables

if name == 'main':
root = Tk()
vars = makeform(root, fields)
Button(root, text='Fetch', command=(lambda: fetch(vars))).pack(side=LEFT)
Quitter(root).pack(side=RIGHT)
root.bind('', (lambda event: fetch(vars)))
root.mainloop()