kicad-flipper.py

#!/usr/bin/env python3

from tkinter import *

def flip(ev):
  entry = ev.widget
  cur = entry.get()
  if '/' in cur:
    cur = '/'.join(reversed(cur.split('/')))
    entry.delete(0, 'end')
    entry.insert(0, cur)

def main():
  root = Tk()
  root.geometry("800x80")
  root.option_add("*font", "Ariel 24")

  label = Label(root, text="Enter description:")
  label.pack(side=LEFT)

  entry = Entry(root)
  entry.pack(side=LEFT, expand=1, fill=BOTH)
  entry.bind("<Return>", flip)

  root.mainloop()

main()