title: How to name dataframes with a for loop?
body: <p>I want to read several files json files and write them to a dataframe with a for-loop. </p>
  
  <pre><code>review_categories = ["beauty", "pet"]
  
  for i in review_categories:
      filename = "D:\\Library\\reviews_{}.json".format(i)
      output = pd.read_json(path_or_buf=filename, lines=True)
  return output 
  </code></pre>
  
  <p>The problem is I want each review category to have its own variable, like a dataframe called "beauty_reviews", and another called "pet_reviews", containing the data read from reviews_beauty.json and reviews_pet.json respectively. </p>