ModuleNotFoundError: No module named 'kivymd.app'

This error occurs when the kivymd.app module is not found in the Python environment. The kivymd.app module is a part of the KivyMD framework, which is an open-source Python framework used for the development of cross-platform applications with a modern user interface.

Problem

The error message ModuleNotFoundError: No module named 'kivymd.app' suggests that the kivymd.app module is not installed or not accessible within the current Python environment.

Solution

To resolve this issue, follow the steps below:

1. Install the KivyMD module:

   pip install kivymd
   

   This command will install the latest version of the KivyMD module. Make sure you have an active internet connection.

2. Verify installation:
   Run the following Python code to verify if the kivymd.app module is installed correctly:

   import kivymd.app
   

   If no error occurs while importing the module, it means that the installation was successful.

3. Check Python environment:
   Ensure that you are using the correct Python environment where KivyMD is installed. It is possible to have multiple Python installations or virtual environments, so make sure to activate the correct one.

4. Verify module version:
   Sometimes, the error can occur if the installed version of the KivyMD module is not compatible with the code. Make sure you have installed a compatible version. Refer to the KivyMD documentation or release notes for information about version compatibility.

5. Ensure correct import statement:
   Double-check that the import statement in your code is correct. It should be:

   from kivymd.app import MDApp
   

By following these steps, you should be able to resolve the ModuleNotFoundError: No module named 'kivymd.app' error and use the kivymd.app module in your Python code successfully.

Note: If you still encounter the error after following these steps, it is possible that there may be an issue with your Python environment or the KivyMD installation. In such cases, referring to the official KivyMD documentation or seeking help from the KivyMD community forums can be helpful.