title: Python: How to search for multiple items in a list
body: <p>So i have a list with number values such as 
  my_num = [1,2,2,3,4,5]</p>
  
  <p>What i want is a code that will check if 1, 2 and 3 are in the list.
  What i had in mind was:</p>
  
  <p>if 1 and 2 and 3 in my_num:</p>
  
  <p>do something</p>
  
  <p>but the problem is if 1 and 3 are in the list the do something code executes anyways even without the 2 being there.</p>