Tkinter错误:与类和框架一起工作时,图像”pyimage2″不存在。

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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:

class SerialFrame(customtkinter.CTkFrame):

    # 框架的构造函数
    def __init__(self, master, *args, **kwargs):
        super(SerialFrame, self).__init__(master)
        self.master = master
        self.serial_port = ""
        self.configure(width=400, height=400)
        self.createWidgetsMain()

    # 创建所有小部件的方法
    def createWidgetsMain(self):
        ...

# 创建应用程序
root = customtkinter.CTk()
root.geometry("700x500")
root.title("Lumalcol Conf")
back = backend.MyAppBackend()

# 创建第一个框架,调用MyApp类
SerialFrame(root).place(x=25, y=50)
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:

def go_back():
    self.destroy()
    btn_back.destroy()
    from main import SerialFrame
    SerialFrame(self.master).place(x=25, y=50)

btn_back = customtkinter.CTkButton(self.master, text="返回",
                                   command=go_back, cursor="hand2")
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:

my_image = customtkinter.CTkImage(light_image=Image.open("images/refresh.png"),
                                  dark_image=Image.open("images/refresh.png"),
                                  size=(20, 20))

# 创建刷新按钮
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):

def segmented_button_callback(value):

    if value == "Inputs":
        self.destroy()
        input_frame.InputFrame(self.master, back).place(x=75, y=75)

    if value == "Menu":
        try:
            connection = back.get_connection()
            self.destroy()
            menu_frame.MenuFrame(self.master, back).place(x=25, y=75)
        except:
            self.destroy()
            SerialFrame(self.master).place(x=25, y=50)

segemented_button = customtkinter.CTkSegmentedButton(master=self,
                                                     values=["Menu", "Inputs"],
                                                     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:

Traceback (most recent call last):
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter\__init__.py", line 1921, in __call__
    return self.func(*args)
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 549, in _clicked
    self._command()
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\input_frame.py", line 88, in go_back
    from main import SerialFrame
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py", line 126, in <module>
    SerialFrame(root).place(x=25, y=50)
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py", line 20, in __init__
    self.createWidgetsMain()
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\main.py", line 101, in createWidgetsMain
    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", line 106, in __init__
    self._draw()
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 261, in _draw
    self._update_image()  # set image
  File "D:\PYCHARM\pycharmprojects\lumacol_frontend\venv\lib\site-packages\customtkinter\windows\widgets\ctk_button.py", line 172, in _update_image
    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", line 1675, in configure
    return self._configure('configure', cnf, kw)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2544.0_x64__qbz5n2kfra8p0\lib\tkinter\__init__.py", line 1665, in _configure
    self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
_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:

class SerialFrame(customtkinter.CTkFrame):

# CONSTRUCTOR FOR THE FRAME
def __init__(self, master, *args, **kwargs):
    super(SerialFrame, self).__init__(master)
    self.master = master
    self.serial_port = ""
    self.configure(width=400, height=400)
    self.createWidgetsMain()

# METHOD TO CREATE ALL WIDGETS
def createWidgetsMain(self):
    ...

# CREATING THE APP
root = customtkinter.CTk()
root.geometry("700x500")
root.title("Lumalcol Conf")
back = backend.MyAppBackend()
# CREATING THE FIRST FRAME CALLING THE CLASS MY APP
SerialFrame(root).place(x=25, y=50)
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:

    def go_back():
        self.destroy()
        btn_back.destroy()
        from main import SerialFrame
        SerialFrame(self.master).place(x=25, y=50)

    btn_back = customtkinter.CTkButton(self.master, text="Go Back",
                                       command=go_back, cursor="hand2")
    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.

 my_image = customtkinter.CTkImage(light_image=Image.open("images/refresh.png"),
                                          dark_image=Image.open("images/refresh.png"),
                                          size=(20, 20))

        # CREATE REFRESH BUTTON
        refresh_serials = customtkinter.CTkButton(master=self, command=refresh_menu, image=my_image, width=20,
                                                  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):

    def segmented_button_callback(value):

        if value == "Inputs":
            self.destroy()
            input_frame.InputFrame(self.master, back).place(x=75, y=75)

        if value == "Menu":
            try:
                connection = back.get_connection()
                self.destroy()
                menu_frame.MenuFrame(self.master, back).place(x=25, y=75)
            except:
                self.destroy()
                SerialFrame(self.master).place(x=25, y=50)

    segemented_button = customtkinter.CTkSegmentedButton(master=self,
                                                         values=["Menu", "Inputs"],
                                                         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:

...

# 创建应用程序
root = customtkinter.CTk()
root.geometry("700x500")
root.title("Lumalcol Conf")
back = backend.MyAppBackend()
# 创建第一个框架,调用MY APP类
SerialFrame(root).place(x=25, y=50)
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:

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

...

# CREATING THE APP
root = customtkinter.CTk()
root.geometry("700x500")
root.title("Lumalcol Conf")
back = backend.MyAppBackend()
# CREATING THE FIRST FRAME CALLING THE CLASS MY APP
SerialFrame(root).place(x=25, y=50)
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:

...
if __name__ == "__main__":
    # CREATING THE APP
    root = customtkinter.CTk()
    root.geometry("700x500")
    root.title("Lumalcol Conf")
    # CREATING THE FIRST FRAME CALLING THE CLASS MY APP
    SerialFrame(root).place(x=25, y=50)
    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
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