from trac.perm import PermissionSystem # create instance of PermissionSystem permsys = PermissionSystem(env) # get permissions for user "john" permissions = permsys.get_user_permissions('john') print(permissions)In this example, we created an instance of PermissionSystem using the Trac environment "env". We then called the get_user_permissions() method and passed the username "john" as an argument. The method returns a list of permissions assigned to the user, which we printed to the console. The package used in this example is Trac.