How do Exception, do nothing and carry on

The function in the following block code may fail.

How to make it to carry on by ignoring exception?

Something like Python's try catch.

for i in (select distinct id from id_table) 

  loop

         raise notice '%', i;

           insert into my_table(id, last, arr, count) SELECT i, * from my_function(i) f(last int, arr int[], count int);

           commit;

  end loop;