title: How to check if a string has 2 consecutive items from a list?
body: <p>I'm a python beginner and want to check if a string contains 2 consecutive items from a list.</p>
  <pre><code>a_list = operators = ['+', '-', '*', '/', '=']
  
  a_string = '5+3=+2'
  </code></pre>
  <p>Code should return True if there are items from the list not adjoined, but return false if the items appear consecutively.
  For example 5+3-3=2/1 should return True
  5+-2=0 should return False</p>
  <p>I can only be able to check if the item is in the string</p>