find * -maxdepth 0 ! -name '*.o' -print0 | xargs -0 ls -dl

function lso {
    find * -maxdepth 0 ! -name "*.$1" -print0 | xargs -0 ls -dl
}

$ ls -l
total 8
-rw-r--r--  1 danielbeck  staff    0  2 Sep 12:52 pi.c
-rw-r--r--  1 danielbeck  staff    0  2 Sep 12:52 pi.o
-rw-r--r--  1 danielbeck  staff  278 31 Aug 06:52 pi.py
-rw-r--r--  1 danielbeck  staff    0  2 Sep 12:52 pi.pyc

$ lso
-rw-r--r--  1 danielbeck  staff    0  2 Sep 12:52 pi.c
-rw-r--r--  1 danielbeck  staff  278 31 Aug 06:52 pi.py
-rw-r--r--  1 danielbeck  staff    0  2 Sep 12:52 pi.pyc

ls -1F | grep -v '[/@=%|]'