title: How to check if DynamoDB table exists?
body: <p>I'm a new user in boto3 and i'm using <code>DynamoDB</code>.</p>
  
  <p>I went through over the DynamoDB api and I couldn't find any method which tell me if a table is already exists.</p>
  
  <p>What is the best approach dealing this issue? </p>
  
  <p>Should I try to create a new table and wrap it using try catch ?</p>