title: Searching a text file and grabbing all lines that do not include ## in python
body: <p>I am trying to write a python script to read in a large text file from some modeling results, grab the useful data and save it as a new array. The text file is output in a way that has a ## starting each line that is not useful. I need a way to search through and grab all the lines that do not include the ##. I am used to using grep -v in this situation and piping to a file. I want to do it in python!</p>
  
  <p>Thanks a lot.</p>
  
  <p>-Tyler </p>