file_dialog is a nice customizable File Dialog add-on for DearPyGui

example:

import dearpygui.dearpygui as dpg
from fdialog import FileDialog
dpg.create_context()
def pr(selected_files):
    dpg.delete_item("txt_child", children_only=True)
    for file in selected_files:
        dpg.add_text(file, parent="txt_child")
fd = FileDialog(callback=pr, show_dir_size=False, modal=False, allow_drag=False, default_path="..")
with dpg.window(label="hi", height=100, width=100):
    dpg.add_button(label="fd", callback=fd.show_file_dialog)
    dpg.add_child_window(width=-1, height=-1, tag="txt_child")
dpg.create_viewport(title='Test', width=300, height=50)
dpg.setup_dearpygui()
dpg.show_viewport()
dpg.start_dearpygui()
dpg.destroy_context()

Note: The file dialog callback can be changed by using change_callback()

• Download repository with git git clone https://github.com/totallynotdrait/file_dialog or download the zip file and extract it
• Move the file_dialog folder into your project and then import fdialog.py or the FileDialog class

• Nice interface
• Modern icons for different file exstensions
• Shortcut menu with also a list of external and internal drives
• Complete customization of the file dialog window and it's features
• Can be used at all time by using show_file_dialog() function
• Display hidden files and folders
• Dragging items

• DearPyGui
• psutil

icons8 - for the 3D Fluency icons - https://icons8.it/icons/3d-fluency