From 452add08a186a09f346a28306c96f4c89bf93c9e Mon Sep 17 00:00:00 2001 From: Nadeem Vawda Date: Mon, 1 Oct 2012 23:02:50 +0200 Subject: Issue #16304: Another performance optimization for BZ2File. Patch by Serhiy Storchaka. --- Lib/bz2.py | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/Lib/bz2.py b/Lib/bz2.py index 37918a8..87bed21 100644 --- a/Lib/bz2.py +++ b/Lib/bz2.py @@ -159,21 +159,18 @@ class BZ2File(io.BufferedIOBase): raise ValueError("I/O operation on closed file") def _check_can_read(self): - if self.closed: - raise ValueError("I/O operation on closed file") if self._mode not in (_MODE_READ, _MODE_READ_EOF): + self._check_not_closed() raise io.UnsupportedOperation("File not open for reading") def _check_can_write(self): - if self.closed: - raise ValueError("I/O operation on closed file") if self._mode != _MODE_WRITE: + self._check_not_closed() raise io.UnsupportedOperation("File not open for writing") def _check_can_seek(self): - if self.closed: - raise ValueError("I/O operation on closed file") if self._mode not in (_MODE_READ, _MODE_READ_EOF): + self._check_not_closed() raise io.UnsupportedOperation("Seeking is only supported " "on files open for reading") if not self._fp.seekable(): -- cgit v0.12