I hit "Send" by mistake before I was finished correcting the cut-n-paste I did from a case where I only needed to protect against divisions by zero:

try:

division_by_zero = ext.is_division_by_zero_trapped()

invalid = ext.is_invalid_trapped()

overflow = ext.is_overflow_trapped()

ext.trap_exceptions(division_by_zero=False,

invalid=False,

overflow=False)

finally:

ext.trap_exceptions(division_by_zero=division_by_zero,

invalid=invalid,

overflow=overflow)