title: How to format a list of phone numbers e.g. 202.202.2020 into (202) 202-2020 using Python?
body: <p>I have a huge list of phone numbers which format is mainly e.g. 202.202.2020 but sometimes 2022022020 and sometimes 202 202 2020 etc.. (but they are always 10 numbers).<br/>
  I would like to format all of them to <B>(202) 202-2020</B> using a python script.</p>
  
  <p>Thanks a lot for you help.</p>