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    <statements>
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raise <name>
raise <name>, <data>

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>>> import bad
Traceback (most recent call last):
  File "", line 1, in ?
    import bad
  File "C:\home\papa\lips\prog-method\bad.py", line 7, in ?
    gosouth(1)
  File "C:\home\papa\lips\prog-method\bad.py", line 5, in gosouth
    print gobad(x, 0)
  File "C:\home\papa\lips\prog-method\bad.py", line 2, in gobad
    return x / y
ZeroDivisionError: integer division or modulo by zero

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>>> def kaboom(list, n):
	print list[n]

	
>>> try:
	kaboom([0, 1, 2], 3)
except IndexError:
	print 'Hello world!'

	
Hello world!

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>>> MyError = "my error"
>>> def stuff(file):
	raise MyError

>>> file = open('bad.py', 'r')
>>> try:
	stuff(file)
finally:
	file.close()

	
Traceback (most recent call last):
  File "", line 2, in ?
    stuff(file)
  File "", line 2, in stuff
    raise MyError
my error
>>> file.read()
Traceback (most recent call last):
  File "", line 1, in ?
    file.read()
ValueError: I/O operation on closed file
>>> file = open('bad.py', 'r')
>>> stuff(file)
Traceback (most recent call last):
  File "", line 1, in ?
    stuff(file)
  File "", line 2, in stuff
    raise MyError
my error
>>> file.read()
'def gobad(x, y):\n    return x / y\n\ndef gosouth(x):\n    print gobad(x, 0)\n\ngosouth(1)\n'

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raise

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