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heapq is a nice python module, but the interface is not so clean. I found a one-liner on this blog, it's as short as possible, but not really pythonic either :) Here is my contribution to a most readable heap class.

Python, 17 lines
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import heapq

class Heap(list) :
	def __init__(self, * pos_arg, ** nam_arg) :
		list.__init__(self, * pos_arg, ** nam_arg)
		
	def pop(self) :
		return heapq.heappop(self)
		
	def push(self, item) :
		heapq.heappush(self, item)
		
	def pushpop(self, item) :
		return heapq.heappushpop(self, item)
		
	def poppush(self, itemp) :
		return heapq.replace(self, item)
	

3 comments

James Mills 8 years, 1 month ago  # | flag

I wonder if this also supports priorities. I'd also like to see a heapq implemtantion in Python with a more intuative priority ordering.

pavel 7 years, 12 months ago  # | flag

Sorry, 8-chars indentation looks ugly.

yota (author) 7 years, 11 months ago  # | flag

It's not 8 space indented, but one tab :)

As such, you can set your editor to whatever-you-want-and-I-don't-need-to-care tab size. Space indentation kills kittenz :D

Created by yota on Wed, 23 Oct 2013 (GPL3)
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  • Licensed under the GPL 3
  • Viewed 8225 times
  • Revision 2 (updated 6 years ago)