[英]Learning python, stuck in gui program that won't run
我一直在遵循一個教程,並編寫了該程序。 有人可以幫我弄清楚為什么我收到錯誤消息。 “應用程序實例沒有屬性'文本'”
from Tkinter import *
class Application(Frame):
""" A GUI application with three buttons."""
def __init__(self,master):
""" This initialized the Frame"""
Frame.__init__(self, master)
self.grid()
self.create_widgets()
self.buttonclicks = 0
def create_widgets(self):
"""Create a button that measures clicks."""
#create first button
self.button1 = Button(self, text = "Total Clicks: 0")
self.button1.grid()
self.instruction = Label(self, text= "Enters the password")
self.instruction.grid(row=0, column=0, columnspan=2, sticky=W)
self.password = Entry(self)
self.password.grid(row=1,column=1, sticky=W)
self.button1["command"] = self.update_count
self.button1.grid(row=2,column=0,sticky=W)
self.submit_button = Button(self, text="Submit", command=self.reveal())
self.texts = Text(self, width=35, height=5,wrap=WORD)
self.texts.grid(row=4,column=1,columnspan=2,sticky=W)
def update_count(self):
"""Increase this click count and display the new total"""
self.buttonclicks += 1
self.button1["text"] = "Total Clicks: " + str(self.buttonclicks)
def reveal(self):
"""Reveal the password"""
content = self.password.get()
messsage=""
if content == "password":
message = "You have access to the data."
else:
message = "Access denied."
self.texts.insert(0.0,message)
root = Tk()
root.title("GUI test")
root.geometry("250x185")
app = Application(root)
root.mainloop()
問題是我已經有一個定義為“文本”的文本字段,並且如果它可以從屬性中獲取密碼,我看不出它不會獲取文本的原因。
編輯:被要求輸入錯誤:
Traceback (most recent call last):
File "clickcounter.py", line 58, in <module>
app = Application(root)
File "clickcounter.py", line 10, in __init__
self.create_widgets()
File "clickcounter.py", line 28, in create_widgets
self.submit_button = Button(self, text="Submit", command=self.reveal())
File "clickcounter.py", line 49, in reveal
self.texts.insert(0.0,message)
AttributeError: Application instance has no attribute 'texts'
換線:
self.submit_button = Button(self, text="Submit", command=self.reveal())
至
self.submit_button = Button(self, text="Submit", command=self.reveal)
當您傳遞self.reveal()
它會在定義self.texts
之前調用self.reveal()
。
您要傳遞給函數而不是調用函數的結果。
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