Python - coincidencia de 2 listas

l1=[1,2,3,4]

l2=[4,5,6,7]

for i in l1:

    print (i in l2)

    if i in l2==True:

        print("hay interseccion")

        break

    print("No hay interseccion")

l1=[1,2,3,4]

l2=[4,5,6,7]

coincidencia=False

for i in l1:

    if i in l2:

        coincidencia=True

        break

if coincidencia:

    print("hay interseccion")

else:

    print("No hay interseccion")

if i in l2==True: