code: def tex_parse(string):
  	
  
  	string = string.replace('{', '').replace('}', '')
  	def tex_replace(match):
  		return \
  			sub(r'\^(\w)', r'<sup>\1</sup>',
  			sub(r'\^\{(.*?)\}', r'<sup>\1</sup>',
  			sub(r'\_(\w)', r'<sub>\1</sub>',
  			sub(r'\_\{(.*?)\}', r'<sub>\1</sub>',
  			sub(r'\\(' + GREEK_LETTERS + ')', r'&\1;', match.group(1))))))
  	return mark_safe(sub(r'\$([^\$]*)\$', tex_replace, escape(string)))
docs: Renders some basic TeX math to HTML.