To make a new folder using askdirectory dialog in Tkinter, we can take the following steps :
* Import the required modules. filedialog module is required for askdirectory method. os module is required for makedirs method.
* Create an instance of tkinter frame.
* Set the size of the frame using win.geometry method.
* Define a user-defined method "create_subfolder". Inside the method, call filedialog.askdirectory to select a folder and save the path in a variable, source_path.
* We can use askdirectory method of filedialog to open a directory. Save the path of the selected directory in a 'path' variable.
* Then, use os.path.join and makedirs to create a sub-folder inside the parent directory.
* Create a button to call the create_subfolder method.
