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(define-module (language python exceptions)
#:use-module (oop pf-objects)
#:use-module (oop goops)
#:export (StopIteration GeneratorExit RuntimeError
Exception ValueError TypeError
IndexError KeyError AttributeError ArgumentError
SyntaxError SystemException
OSError ProcessLookupError PermissionError
None NotImplemented NotImplementedError
RunTimeError AssertionError ImportError
ModuleNotFoundError BlockingIOError))
(define-syntax-rule (aif it p x y) (let ((it p)) (if it x y)))
(define-python-class Exception ()
(define __init__
(case-lambda
((self)
(values))
((self val . l)
(set self 'value val))))
(define __repr__
(lambda (self)
(aif it (ref self 'value #f)
(format #f "~a:~a"
(ref self '__name__) it)
(format #f "~a"
(ref self '__name__))))))
(define-syntax define-er
(syntax-rules ()
((_ nm k)
(define-python-class nm (Exception)))
((_ nm w k)
(define-python-class nm w))))
(define StopIteration 'StopIteration)
(define GeneratorExit 'GeneratorExit)
(define-er SystemException 'SystemException)
(define-er RuntimeError 'RuntimeError)
(define-er IndexError 'IndexError)
(define-er ArgumentError 'IndexError)
(define-er ValueError 'ValueError)
(define None 'None)
(define-er KeyError 'KeyError)
(define-er TypeError 'TypeError)
(define-er AttributeError 'AttributeError)
(define-er SyntaxError 'SyntaxError)
(define-er OSError 'OSError)
(define-er ProcessLookupError 'ProcessLookupError)
(define-er PermissionError 'PermissionError)
(define-er NotImplementedError 'NotImplementedError)
(define-er RunTimeError 'RunTimeError)
(define AssertionError 'AssertionError)
(define-er ImportError 'ImportError)
(define-er ModuleNotFoundError (ImportError) 'ModuleNotFoundError)
(define-er BlockingIOError 'BlockingIOError)
(define NotImplemented (list 'NotImplemented))
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