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qemu-iotests: use context managers for resource cleanup in 194
Switch from atexit.register() to a more elegant idiom of declaring resources in a with statement: with FilePath('monitor.sock') as monitor_path, VM() as vm: ... The files and VMs will be automatically cleaned up whether the test passes or fails. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20170824072202.26818-4-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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