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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 render(self, doc, context=None, math_option=False, img_path='', css_path=CSS_PATH):
 """Start thread to render a given documentation"""

        # If the thread is already running wait for it to finish before
        # starting it again.
        if self.wait():
            self.doc = doc
            self.context = context
            self.math_option = math_option
            self.img_path = img_path
            self.css_path = css_path
            # This causes run() to be executed in separate thread
            self.start()