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(python2.1-tut.info)Raising Exceptions

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Raising Exceptions
==================

The `raise' statement allows the programmer to force a specified
exception to occur.  For example:

     >>> raise NameError, 'HiThere'
     Traceback (most recent call last):
       File "<stdin>", line 1
     NameError: HiThere

The first argument to `raise' names the exception to be raised.  The
optional second argument specifies the exception's argument.