[Tutor] Trapping Interpreter errors as a string

[Tim Johnson]

Hello:
	Am looking for a way to trap python errors as a string.
A quick example would be like the disarm function in the rebol language.

To be more specific:
Let's say I had a simple cgi program to first sent the the mime-type
print "Content-type: text/html\n"

then I do something dumb, like

integer = string.atoi("duh")

Guido will then say:

Traceback (innermost last):
  File "<stdin>", line 1, in ?
ValueError: invalid literal for atoi(): duh

To reduce this inquiry:
1)Can that error message be returned to the user as a string.
2)Is there a specific numeric error code attached to the error message.
   i.e. ValueError = ?

Then the programmer could gracefully complete the output form with
the error message within it.

I hope I being clear here.
TIA

--
Tim Johnson
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"Of all manifestations of power,
 restraint impresses the most."
 -Thucydides