我想参考def check(self)
中的标签。它应该检查来自外部设备的反馈是否等于某个东西,但如果等于或不等于,我不知道如何参考标签和改变它的颜色。我想改变,例如lab3
背景为绿色或红色,取决于平等。这是我的密码:
# -*- coding: utf-8 -*-
import Tkinter as T, tkFileDialog
import os
from time import *
import serial
from ttk import Button, Label, Frame, Entry, Style
class Program(Frame):
def __init__(self, root):
Frame.__init__(self, root)
self.root = root
self.initUI()
def initUI(self):
self.root.title('OptoMaQ')
Style().configure('TFrame', background = '#6666ff')
Style().configure('TButton',background = '#6666ff')
lab1 = Label(self, text = 'Press Save to save a file', background = '#6666ff').grid(row = 0, columnspan = 5)
but1 = Button(self, text='Save', command=self.save).grid(row = 2,column = 1)
lab2 = Label(self, text = 'Press Exit to quite', background = '#6666ff').grid(row = 1, columnspan = 5)
but2 = Button(self, text = 'Exit',command = self.exit).grid(row = 2, column = 2)
lab3 = Label(self, text = 'Spectra-Hub', background = '#6666ff').grid(row = 3, columnspan = 5)
lab4 = Label(self, text = 'SpectraPro VM-504',background = '#6666ff').grid(row = 4,columnspan = 5)
lab5 = Label(self, text = 'SpectraPro SP-2-300i',background = '#6666ff').grid(row = 5, columnspan = 5)
but3 = Button(self, text = 'Check',command = self.check).grid(row = 6, columnspan = 5)
lab6 = Label(self, text = 'Type sth here', background = '#6666ff').grid(row = 7,columnspan = 5)
self.entry = Entry(self, justify = 'center',text = '1')
self.entry.grid(row = 8, columnspan =3)
self.fileop = options = {}
options['filetypes'] = [('all files', '.*'),('dat files','.dat'),('text files', '.txt')]
options['initialfile'] = 'file.txt'
options['parent'] = root
def check(self):
port = serial.Serial(15)
command = 'WHO'
port.write(command + '\r')
out = port.read(50)
if out == 'Acton Research Corp. \nSpectra-Hub':
lab3 = Label(self, text = 'Spectra-Hub', background = '#6666ff').grid(row = 3, columnspan = 5)
lab3.config(background = 'green')
port.close()
else:
lab3 = Label(self, text = 'Spectra-Hub', background = '#6666ff').grid(row = 3, columnspan = 5)
lab3.config(background = 'red')
port.close()
port2 = serial.Serial(16)
port2.write(command +'\r')
out2 = port2.read(50)
if out2 == 'Acton Research Corp. \nSpectraPro VM-504':
port2.close()
else:
port2.close()
port3 = serial.Serial(17)
port3.write(command + '\r')
out3 = port3.read(46)
if out3 == 'Acton Research Corp. \n SpectraPro SP-2-300i':
port3.close()
else:
port3.close()
def save(self):
filename = tkFileDialog.asksaveasfilename(**self.fileop)
if filename:
file = open(filename, 'a+')
time = strftime("%A, %d %b %Y, %H:%M:%S ", gmtime())
print time
file.write(time)
file.write('\n')
input = str(self.entry.get())
file.write(input)
file.close()
def exit(self):
root.destroy()
if __name__=='__main__':
root = T.Tk()
Program(root).pack()
root.mainloop()
我在第46-53行尝试过类似的方法,但是没有用。它显示第52行中的'NoneType' object has no attribute 'config'
。有什么想法吗?这对我来说真的很重要,请帮帮我:)
这是因为标签只在
def initUI(self):
范围内定义,因此def check(self)
无法访问尝试将按钮定义为
self.lab1
而不是lab1
,并以同样的方式引用它们。你知道吗相关问题 更多 >
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