title: How to identify the categorical variables in the 200+ numerical variables?
body: <p>I have a dataset which has 200+ numerical variables (type:int). In those variables, a few are categorical variables having values like (0,1),(0,1,2,3,4) etc.</p>
  
  <p>I need to identify these categorical variables and dummify them.
  Identifying and dummifying them takes a lot of time - is there any way to do it easily?</p>