[Python-Dev] Exception type on handling closed files (original) (raw)

Fredrik Lundh fredrik at pythonware.com
Mon Dec 12 08:32:47 CET 2005


João Paulo Silva wrote:

>>> a = file("dir/foo") >>> a.close() >>> a.read()

Traceback (most recent call last): File "<pyshell#28>", line 1, in -toplevel- a.read() ValueError: I/O operation on closed file Shoudn't this raise IOError? Seems more semantically correct to me.

IOError is, as the documentation says, used "when an I/O operation fails for an I/O related reason", while ValueError is used "when an argument has the right type but an inappropriate value."



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