how to use "heapq" module as a max-heap?

[Apollo]

as we all known, in the standard module 'heapq',  we can easily get the smallest item from the heap. i.e. it's an implementation of min-heap.
  
 my question is how to use 'heapq' to extract the biggest item from the heap?  is it possible?
  
 thanks  in advance.:)
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