How to remove code duplicity in python list comprehension?

Question

How to resolve the following code duplicity by combining into one list comprehension?

 myList   =[ //someList      ]      
 thierList=[ //someOtherList ]      

 if name:
          [x for x in range(2,100) if x%2 and x in mylist and x not in theirList]

 else:
          [x for x in range(2,100) if x in mylist and x not in theirList] 

Answer 1

[x for x in range(2,100) if x in mylist and x not in theirList if not name or x%2 ]

Answer 2

Or you can use sets http://docs.python.org/2/library/sets.html

set(myList + thierList)