title: Python regex equivalent of bash's {1..4}
body: <p>Does python's regular expression have anything equivalent to match numbers in a given range?</p>
  
  <p>For example in bash, you can match test19.txt, test20.txt, test21.txt by test{19..21}.txt</p>
  
  <p>I am <strong>not</strong> looking for regular expression to match all digits like [1-2][0-9].</p>
  
  <p>I want to match only a particular series of numbers starting from some number to another.</p>
  
  <p>Update: The final aim is to create a regexp object with re.compile(), so that i can use it to search a big list of strings.</p>