from tkinter import filedialog
from pathlib import Path
import shutil

# Open a file explorer window to choose a file
src_path: str = filedialog.askopenfilename(title='Pick a file to copy')
# Open a file explorer window to choose a directory
dst_directory: str = filedialog.askopendirectory(title='Pick a destination')

# Path handle path regardless of the OS 
dst_path: Path = Path(directory) / f'copy.{src_path.split(".")[-1]}' 

# Copy a file without metadata
shutil.copyfile(src=src_path, dst=dst_path)
# Copy a file with metadata
shutil.copy2(src=src_path, dst=dst_path)