binary_heap.py
def _parent(self, index):
        """
        Returns the index of the parent.
        No bounds checking.
        """
        return (index-1)//2

        Returns the index of the parent.
        No bounds checking.
        
Returns the index of the parent.
No bounds checking.
Returns the index of the parent . No bounds checking .
def _parent(self, index):
        return (index-1)//2
def _parent ( self , index ) : return ( index - 1 ) // 2
Returns the index of the parent.
Returns the index of the parent .
"""
        Returns the index of the parent.
        No bounds checking.
        """
self
index