extending list of booleans by complements of another list of booleans

Given two lists list1 and list2 of booleans , I want to extend list1 by the complements of the elements in list2. For example if

list1 = [True, True, False]
list2 = [False, False, True, False]

then after the operation

list1 = [True, True, False, True, True, False, True]  

while list2 shall remain unchanged.

What is the most pythonic way to achieve that?

>Solution :

How about this:

list1.extend(not value for value in list2)

If there is a risk that list2 is an alias to list1, you are better off with

list1 += [not value for value in list2]