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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 xpath_pick_one(self, xpaths):

 		"""
 		Try each of the xpaths successively until
 		a single element is found. If no xpath succeeds
 		then raise the last UnexpectedContentException caught.
 		"""

		for xpathi, xpath in enumerate(xpaths):
			try:
				return self.xpath(xpath, [1, 1])[0]
			except UnexpectedContentException as e:
				if xpathi == len(xpaths) - 1:
					raise