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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def iterscrapers(self, method, mode = None):
		''' Iterates over all available scrapers. '''

		global discovered
		if discovered.has_key(self.language) and discovered[self.language].has_key(method):
			for Scraper in discovered[self.language][method]:
				yield Scraper