pythonista_filecopy.py

import console
import editor
import os
import shutil

DOCUMENTS = os.path.expanduser("~/Documents")

old_name = editor.get_path()
new_name = os.path.join(DOCUMENTS, console.input_alert("Duplicate File", "Enter new name", os.path.relpath(old_name, DOCUMENTS)))

if os.path.exists(new_name):
    console.hud_alert("Destination already exists", "error")
else:
    shutil.copy(old_name, new_name)
    
    ##editor.open_file(os.path.relpath(new_name, DOCUMENTS)) # For old Pythonistas
    editor.open_file(new_name)