Tkinter错误：与类和框架一起工作时，图像”pyimage2″不存在。

huangapple
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英文:

Tkinter error: image "pyimage2" doesn't exist working with classes and frames

问题

我正在使用tkinter上的类，并且遇到了这个问题：

错误追踪（最近的调用在最上面）：

  • File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter_init_.py"，第1921行，在__call__中：
    返回self.func(*args)
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py"，第549行，在_clicked中：
    self._command()
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\input_frame.py"，第88行，在go_back中：
    from main import SerialFrame
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py"，第126行，在中：
    SerialFrame(root).place(x=25, y=50)
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py"，第20行，在__init__中：
    self.createWidgetsMain()
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py"，第101行，在createWidgetsMain中：
    refresh_serials = customtkinter.CTkButton(master=self, command=refresh_menu, image=my_image, width=20,
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py"，第106行，在__init__中：
    self._draw()
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py"，第261行，在_draw中：
    self._update_image() # set image
  • File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py"，第172行，在_update_image中：
    self._image_label.configure(image=self._image.create_scaled_photo_image(self._get_widget_scaling(),
  • File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter_init_.py"，第1675行，在configure中：
    返回self._configure('configure', cnf, kw)
  • File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter_init_.py"，第1665行，在_configure中：
    self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
  • _tkinter.TclError: 图像"pyimage2"不存在

这是我的应用程序代码以及关于它应该如何工作的解释：

首先，我有一个包含SerialFrame类、窗口和框架创建的文件：

  1. class SerialFrame(customtkinter.CTkFrame):
  3.     # 框架的构造函数
  4.     def __init__(self, master, *args, **kwargs):
  5.         super(SerialFrame, self).__init__(master)
  6.         self.master = master
  7.         self.serial_port = ""
  8.         self.configure(width=400, height=400)
  9.         self.createWidgetsMain()
  11.     # 创建所有小部件的方法
  12.     def createWidgetsMain(self):
  13.         ...
  15. # 创建应用程序
  16. root = customtkinter.CTk()
  17. root.geometry("700x500")
  18. root.title("Lumalcol Conf")
  19. back = backend.MyAppBackend()
  21. # 创建第一个框架，调用MyApp类
  22. SerialFrame(root).place(x=25, y=50)
  23. root.mainloop()

我还有另外两个文件，其中包含其他不同类的帧，以类似的方式创建。

问题是当我按按钮返回到第一个帧时，这里是其他类中的代码：

  1. def go_back():
  2.     self.destroy()
  3.     btn_back.destroy()
  4.     from main import SerialFrame
  5.     SerialFrame(self.master).place(x=25, y=50)
  7. btn_back = customtkinter.CTkButton(self.master, text="返回",
  8.                                    command=go_back, cursor="hand2")
  9. btn_back.place(x=465, y=400)

显然，在编写应用程序时，我遇到了许多不同的问题，如果你看到有什么不正常的地方，请告诉我。

我认为问题可能出在这里。这段代码在主文件的createWidgetsMain方法和SerialFrame类中：

  1. my_image = customtkinter.CTkImage(light_image=Image.open("images/refresh.png"),
  2.                                   dark_image=Image.open("images/refresh.png"),
  3.                                   size=(20, 20))
  5. # 创建刷新按钮
  6. refresh_serials = customtkinter.CTkButton(master=self, command=refresh_menu, image=my_image, width=20, text="")

我认为当我按下"返回"按钮时，应该创建一个SerialFrame类的新对象并将其放置在root中。显然，当我创建其他帧时，我始终将root传递给它们。

这是用于创建其他类的按钮的代码（它位于createWidgedsMain方法中）：

  1. def segmented_button_callback(value):
  3.     if value == "Inputs":
  4.         self.destroy()
  5.         input_frame.InputFrame(self.master, back).place(x=75, y=75)
  7.     if value == "Menu":
  8.         try:
  9.             connection = back.get_connection()
  10.             self.destroy()
  11.             menu_frame.MenuFrame(self.master, back).place(x=25, y=75)
  12.         except:
  13.             self.destroy()
  14.             SerialFrame(self.master).place(x=25, y=50)
  16. segemented_button = customtkinter.CTkSegmentedButton(master=self,
  17.                                                      values=["Menu", "Inputs"],
  18.                                                      command=segmented_button_callback)

整个应用程序都运行正常，我唯一的问题是"返回"按钮，谢谢。

英文:

i'm working with classes on tkinter and i have this problem:

  1. Traceback (most recent call last):
  2.   File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter\__init__.py", line 1921, in __call__
  3.     return self.func(*args)
  4.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 549, in _clicked
  5.     self._command()
  6.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\input_frame.py", line 88, in go_back
  7.     from main import SerialFrame
  8.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py", line 126, in <module>
  9.     SerialFrame(root).place(x=25, y=50)
  10.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py", line 20, in __init__
  11.     self.createWidgetsMain()
  12.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py", line 101, in createWidgetsMain
  13.     refresh_serials = customtkinter.CTkButton(master=self, command=refresh_menu, image=my_image, width=20,
  14.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 106, in __init__
  15.     self._draw()
  16.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 261, in _draw
  17.     self._update_image()  # set image
  18.   File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 172, in _update_image
  19.     self._image_label.configure(image=self._image.create_scaled_photo_image(self._get_widget_scaling(),
  20.   File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter\__init__.py", line 1675, in configure
  21.     return self._configure('configure', cnf, kw)
  22.   File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter\__init__.py", line 1665, in _configure
  23.     self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
  24. _tkinter.TclError: image "pyimage2" doesn't exist

This is the code on my application and explanation about how it should work:

First of all, i have a file with the class SerialFrame, and the creation of the window and the frame:

  1. class SerialFrame(customtkinter.CTkFrame):
  3. # CONSTRUCTOR FOR THE FRAME
  4. def __init__(self, master, *args, **kwargs):
  5.     super(SerialFrame, self).__init__(master)
  6.     self.master = master
  7.     self.serial_port = ""
  8.     self.configure(width=400, height=400)
  9.     self.createWidgetsMain()
  11. # METHOD TO CREATE ALL WIDGETS
  12. def createWidgetsMain(self):
  13.     ...
  15. # CREATING THE APP
  16. root = customtkinter.CTk()
  17. root.geometry("700x500")
  18. root.title("Lumalcol Conf")
  19. back = backend.MyAppBackend()
  20. # CREATING THE FIRST FRAME CALLING THE CLASS MY APP
  21. SerialFrame(root).place(x=25, y=50)
  22. root.mainloop()

And i have another 2 files with other diferent classes for other frames in similar way.

The problem is when i press a button to go back to the first frame, here is the code in the other classes:

  1.     def go_back():
  2.         self.destroy()
  3.         btn_back.destroy()
  4.         from main import SerialFrame
  5.         SerialFrame(self.master).place(x=25, y=50)
  7.     btn_back = customtkinter.CTkButton(self.master, text="Go Back",
  8.                                        command=go_back, cursor="hand2")
  9.     btn_back.place(x=465, y=400)

Obviously, while coding the app i had many different problems and if you see something that shouldn't be work well, you can tell me.

I think that probably the error would come here. This code is on def createWidgetsMain, on the main file, and the SerialFrame class.

  1.  my_image = customtkinter.CTkImage(light_image=Image.open("images/refresh.png"),
  2.                                           dark_image=Image.open("images/refresh.png"),
  3.                                           size=(20, 20))
  5.         # CREATE REFRESH BUTTON
  6.         refresh_serials = customtkinter.CTkButton(master=self, command=refresh_menu, image=my_image, width=20,
  7.                                                   text="")

I think that when i press the go_back button, on the other classes, it should create a new object of SerialFrame class and place in the root.
Obviously, when i create the other frames, i always send the root, the Tk().

Here is the code of the button to go create the other classes (it's inside the createWidgedsMain method):

  1.     def segmented_button_callback(value):
  3.         if value == "Inputs":
  4.             self.destroy()
  5.             input_frame.InputFrame(self.master, back).place(x=75, y=75)
  7.         if value == "Menu":
  8.             try:
  9.                 connection = back.get_connection()
  10.                 self.destroy()
  11.                 menu_frame.MenuFrame(self.master, back).place(x=25, y=75)
  12.             except:
  13.                 self.destroy()
  14.                 SerialFrame(self.master).place(x=25, y=50)
  16.     segemented_button = customtkinter.CTkSegmentedButton(master=self,
  17.                                                          values=["Menu", "Inputs"],
  18.                                                          command=segmented_button_callback)

All application works well, my only problem is that, thank you.
Here are some pics of the app

Tkinter错误：与类和框架一起工作时，图像”pyimage2″不存在。

Tkinter错误：与类和框架一起工作时，图像”pyimage2″不存在。

答案1

得分: 0

由于你在 main.py 中有以下代码：

  1. ...
  3. # 创建应用程序
  4. root = customtkinter.CTk()
  5. root.geometry("700x500")
  6. root.title("Lumalcol Conf")
  7. back = backend.MyAppBackend()
  8. # 创建第一个框架，调用MY APP类
  9. SerialFrame(root).place(x=25, y=50)
  10. root.mainloop()

所以当在 go_back() 中执行 from main import SerialFrame 这一行时，会创建另一个 customtkinter.CTk() 的实例，导致异常。

你需要将代码块放在一个 if __name__ == "__main__" 块中，如下所示：

  1. ...
  2. if __name__ == "__main__":
  3.     # 创建应用程序
  4.     root = customtkinter.CTk()
  5.     root.geometry("700x500")
  6.     root.title("Lumalcol Conf")
  7.     # 创建第一个框架，调用MY APP类
  8.     SerialFrame(root).place(x=25, y=50)
  9.     root.mainloop()

然后当导入 main 时，该代码块将不会被执行。

英文:

Since you have the following code inside main.py:

  1. ...
  3. # CREATING THE APP
  4. root = customtkinter.CTk()
  5. root.geometry("700x500")
  6. root.title("Lumalcol Conf")
  7. back = backend.MyAppBackend()
  8. # CREATING THE FIRST FRAME CALLING THE CLASS MY APP
  9. SerialFrame(root).place(x=25, y=50)
  10. root.mainloop()

So when the line from main import SerialFrame inside go_back() is executed, another instance of customtkinter.CTk() will be created which causes the exception.

You need to put the code block inside a if __name__ == "__main__" block as below:

  1. ...
  2. if __name__ == "__main__":
  3.     # CREATING THE APP
  4.     root = customtkinter.CTk()
  5.     root.geometry("700x500")
  6.     root.title("Lumalcol Conf")
  7.     # CREATING THE FIRST FRAME CALLING THE CLASS MY APP
  8.     SerialFrame(root).place(x=25, y=50)
  9.     root.mainloop()

Then the code block will not be executed when main is imported.

huangapple
  • 本文由 发表于 2023年2月6日 21:09:28
  • 转载请务必保留本文链接：https://go.coder-hub.com/75361745.html
  • python
  • tkinter
  • tkinter-button
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