Finding missing element in a list in Python

I have two lists J2 and J10. I am trying to find the elements in J10 which are absent in J2 but I am getting an error. I present the expected output.

J2=[128, 4, 6, 7, 8, 9, 10]

J10=[4, 6, 7, 8, 9, 10, 13, 128]

J=[i for i in J10 not in J2]
print(J)

The error is

in <module>
    J=[i for i in J10 not in J2]

TypeError: 'bool' object is not iterable

The expected output is

[13]

>Solution :

J=[i for i in J10 if i not in J2]

Or:

lst=[]
for i in J10:
    if i not in J2:
        lst.append(i)
#[13]

Or

set(J10)-(set(J2))