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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 rstyle(self, name):
 		""" 		Remove one style 		"""

		try:
			del self.chart_style[name]
		except KeyError:
			self.warning("Style " + name + " is not set")
		except:
			self.err("Can not remove style " + name)