我的代码有问题，单词中出现一条错误消息 -> word = " word = str (Entry.get (input_text(( 这显然是指打印全文，当我希望它在非根窗口窗口中工作但阅读窗口时，它不会按照我想要的方式工作。
这是代码：
from tkinter import *
import sys
import tkinter as tk
from tkinter import messagebox
#---------
root = Tk()
root.title("Window")
#----------
#toiminnot root ikkunassa
functions = Label(root, text = "Select an action!")
functions.place(x = 70, y= 10)
#lue toimonto koodi alkaa
def read():
reading_window = Tk()
reading_window.title("Read function")
frame = Frame(reading_window)
frame.pack()
read_the_text = Label(reading_window, text = "Enter text in the box!")
read_the_text.place(x = 70, y = 10)
word = ""
word = str(Entry.get(input_text))
#frame johon kirjoitetaan
input_text = Entry(reading_window)
input_text.place(x=55, y=30)
#lueikkuna koko ja sijoitus
reading_window.geometry("300x300+100+100")
#lue sana painike joka tuo viestin
print_button = tk.Button(reading_window, text = 'Show typed text', height = 1, width = 15) #, command = print1)
print_button.place(x=80, y=60)
text_a_tip = Label(reading_window, text ="The typed text is displayed innthe message window!")
text_a_tip.place(x = 50, y = 90)
def print1():
tk.messagebox.showinfo('Kirjoitetun tekstin tulostus viestiikkunaan', (Entry.get(input_text)))
def close():
reading_window.destroy()
read_close_button = tk.Button(reading_window, text = 'Close the reading function', height = 1, width = 20, command = close)
read_close_button.place(x = 60, y = 270)
read.mainloop()
#lue toiminto koodi loppuu
read_function = tk.Button(root, text='Read function', height = 1, width = 15, command = read)
read_function.place(x = 55,y = 35)
#ohjleman lopettamisen koodi alkaa
def quit_prog():
MsgBox = tk.messagebox.askquestion('Quit program', ' Are you sure you want to close the program?',icon = 'warning')
if MsgBox == 'yes':
root.destroy()
sys.exit(0)
else:
tk.messagebox.showinfo('Back','Now you are back!')
quit_programbutton = tk.Button(root, text='Close program', height = 1, width = 15, command = quit_prog)
quit_programbutton.place(x=50, y=220)
#ohjelman lopettamisen koodi loppuu tähän
#----------
#----------
root.geometry("250x250+20+60") #"450x450=leveysxkorkeus"+"20+40=vasenreuna+yläreuna"
root.mainloop()
源
我真的看不出"word"变量有什么用，但我假设你需要它。不能使用在使用该变量的行下定义的变量。
word = ""
word = str(Entry.get(input_text)) # input_text is defined below, interpreter doesn't know what is it "input_text" yet.
input_text = Entry(reading_window)
input_text.place(x=55, y=30)
它应该是相反的。
input_text = Entry(reading_window)
input_text.place(x=55, y=30)
word = ""
word = str(Entry.get(input_text)) # now there is no error
它不能解决您的问题，因为我看到在函数 print1 中您再次使用imput_text但它在不同的函数中定义，因此它不起作用。
def print1():
# input_text is local variable in read function.
tk.messagebox.showinfo('Kirjoitetun tekstin tulostus viestiikkunaan', (Entry.get(input_text)))
为了解决您的问题，您可以将input_text作为 print1 的参数传递，就像这个工作示例中一样。
def read():
reading_window = Tk()
reading_window.title("Read function")
frame = Frame(reading_window)
frame.pack()
read_the_text = Label(reading_window, text = "Enter text in the box!")
read_the_text.place(x = 70, y = 10)
input_text = Entry(reading_window)
input_text.place(x=55, y=30)
word = ""
word = str(Entry.get(input_text))
reading_window.geometry("300x300+100+100")
# pass input_text to print1
print_button = tk.Button(reading_window, text = 'Show typed text', height = 1, width = 15, command = lambda: print1(input_text))
print_button.place(x=80, y=60)
text_a_tip = Label(reading_window, text ="The typed text is displayed innthe message window!")
text_a_tip.place(x = 50, y = 90)
def print1(input_text):
# print1 takes now one argument and has reference to input_text
tk.messagebox.showinfo('Kirjoitetun tekstin tulostus viestiikkunaan', (Entry.get(input_text)))
def close():
reading_window.destroy()
read_close_button = tk.Button(reading_window, text = 'Close the reading function', height = 1, width = 20, command = close)
read_close_button.place(x = 60, y = 270)
read.mainloop()
还可以考虑使用与 place 不同的几何管理器，它甚至写在 effbot 文档中：
将 place 用于普通的窗口和对话框布局通常不是一个好主意;它只是为了让事情按预期工作而做很多工作。将包或网格管理器用于此类目的。
放置几何管理器