environment/lib/python2.7/site-packages/IPython/lib/demo.py
def seek(self,index):
        """Move the current seek pointer to the given block.

        You can use negative indices to seek from the end, with identical
        semantics to those of Python lists."""
        if index<0:
            index = self.nblocks + index
        self._validate_index(index)
        self.block_index = index
        self.finished = False
def seek(self,index):
        """Move the current seek pointer to the given block.

        You can use negative indices to seek from the end, with identical
        semantics to those of Python lists."""
        if index<0:
            index = self.nblocks + index
        self._validate_index(index)
        self.block_index = index
        self.finished = False
Move the current seek pointer to the given block.

        You can use negative indices to seek from the end, with identical
        semantics to those of Python lists.