code: def np_hash(a):
      
      if a is None:
          return hash(None)
      # Ensure that hashes are equal whatever the ordering in memory (C or
      # Fortran)
      a = np.ascontiguousarray(a)
      # Compute the digest and return a decimal int
      return int(hashlib.sha1(a.view(a.dtype)).hexdigest(), 16)
docs: Return a hash of a NumPy array.