title: Python Mac Address Convert Format from : to -
body: <p>i have a .txt file containing mac address with this format f2:e0:e2:e8:3a:5e</p>
  
  <p>how can i convert f2:e0:e2:e8:3a:5e to f2-e0-e2-e8-3a-5e using pyhton and use it as variable?</p>