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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 _find_user_channel(self, username):
 		""" 		Use slacker to resolve the username to an opened IM channel 		"""

		user_id = self.slacker.users.get_user_id(username)
		im = user_id and self.slacker.im.open(user_id).body['channel']['id']
		return im and self.slack.server.channels.find(im)