code: def patch(self, delta):
          "Applies remote delta to local file."
          # Create a temp file in which to store our synced copy. We will handle
          # deleting it manually, since we may move it instead.
          with (tempfile.NamedTemporaryFile(prefix='.sync',
                suffix=os.path.basename(self.path),
                dir=os.path.dirname(self.path), delete=False)) as output:
              try:
                  # Open the local file, data may be read from it.
                  with open(self.path, 'rb') as reference:
                      # Patch the local file into our temporary file.
                      r = librsync.patch(reference, delta, output)
                      os.rename(output.name, self.path)
                      return r
              finally:
                  try:
                      os.remove(output.name)
                  except OSError as e:
                      if e.errno != errno.ENOENT:
                          raisf patch(self, delta):
          "Applies remote delta to local file."
          # Create a temp file in which to store our synced copy. We will handle
          # deleting it manually, since we may move it instead.
          with (tempfile.NamedTemporaryFile(prefix='.sync',
                suffix=os.path.basename(self.path),
                dir=os.path.dirname(self.path), delete=False)) as output:
              try:
                  # Open the local file, data may be read from it.
                  with open(self.path, 'rb') as reference:
                      # Patch the local file into our temporary file.
                      r = librsync.patch(reference, delta, output)
                      os.rename(output.name, self.path)
                      return r
              finally:
                  try:
                      os.remove(output.name)
                  except OSError as e:
                      if e.errno != errno.ENOENT:
                          raise
docs: Applies remote delta to local file.