Python - process only new element of dictionnary -


i have unique (unique keys) dictionnary update adding new keys depending data on webpage. , want process new keys may appear after long time. here piece of code understand :

a = uniquedict()  while 1:      webpage = update() # return list      in webpage:         title = gettitle(i)         a[title] = new_value # populate new title obtained because it's unique dictionnary          if len(a) > 50:             a.clear() # clear dictionnary if big      # condition before entering loop process new title entered     element in a.keys():         process(element)

is there way know new keys added in dictionnary (because of time, same keys , values don't want them processed) ? thank you.

what might do, keep processed keys in set. can check new keys using set(d.keys()) - set_already_processed. , add processed keys using set_already_processed.add(key)


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