How do i compare 2 string Lists and return boolean index

Question

How to Compare List of Strings and create a List of booleans to index over

i think its possible with a loop, but i search for a simple function

l1 =["a","b", "c"]
l2 =["b", "a"]

index = []
for i in l1:
    index.append(i=l2)

expected output: [True, True, False]

Answer 1

You can do something like this.

l1 =["a","b", "c"]
l2 =["b", "a"]

index = []
for i in l1:
    index.append(i in l2)

The loop is for every element of l1 and the if checks if the same element of l1 present in l2 or not. If it exists in l2 then True is appended else False is appended.

Answer 2

Just a normal list comprehension would work

>>> [e in l2 for e in l1]
[True, True, False]