<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def bar_(self, label=None, style=None, opts=None, options={}):
 		""" 		Get a bar chart 		"""

		try:
			return self._get_chart("bar", style=style, opts=opts, label=label,
								   options=options)
		except Exception as e:
			self.err(e, self.bar_, "Can not draw bar chart")