how to insert random error in a programming

[John Gordon]

In <mailman.2205.1350309347.27098.python-list at python.org> Debashish Saha <silideba at gmail.com> writes:

> how to insert random error in a programming?

Open the program source file and replace the Nth character with a random
character.

-- 
John Gordon                   A is for Amy, who fell down the stairs
gordon at panix.com              B is for Basil, assaulted by bears
                                -- Edward Gorey, "The Gashlycrumb Tinies"