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Viewing changes to bzrlib/lockable_files.py

Merge bzr.dev 4734 in preparation for NEWS updates.

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bzrlib/lockable_files.py
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""")
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from bzrlib.decorators import (
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    needs_read_lock,
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    needs_write_lock,
 
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    only_raises,
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    )
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from bzrlib.symbol_versioning import (
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    deprecated_in,
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        """Setup a write transaction."""
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        self._set_transaction(transactions.WriteTransaction())
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    @only_raises(errors.LockNotHeld, errors.LockBroken)
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    def unlock(self):
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        if not self._lock_mode:
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            return lock.cant_unlock_not_held(self)