intersection of 2 strings

[Antoine Logean]

Hi,

What is the easiest way to get the intersection of two strings in
python (a kind a "and" operator) ?
ex:

string_1 = "the_car_of_my_fried_is_bigger_as_mine_but_my_girlfriend_is_more_beautifull"

string_2 =
"my_girlfriend_is_more_beautifull_and_has_blue_eyes"

and the intersection :
string_1 "and" string_2 = "my_girlfriend_is_more_beautifull"

thanks for your help

Antoine