docs: def print_math(math_expression_lst, name = "math.html", out='html', formatter = lambda x: x):
      """
      Converts LaTeX math expressions into an html layout.
      Creates a html file in the directory where print_math is called
      by default. Displays math to jupyter notebook if "notebook" argument
      is specified.
  
      Args:
          math_expression_lst (list):  A list of LaTeX math (string) to be rendered by KaTeX
          out (string): {"html"|"notebook"}: HTML by default. Specifies output medium.
          formatter (function): function that cleans up the string for KaTeX. 
      Returns:
          A HTML file in the directory where this function is called, or displays
          HTML output in a notebook.
      """
      try: shutil.rmtree('viz')
      except: pass
      pth = get_cur_path()+print_math_template_path
      shutil.copytree(pth, 'viz')
  
      # clean_str = formatter(math_expression_lst)
      html_loc = None
      if out == "html":
          html_loc = pth+"standalone_index.html"
  
      if out == "notebook":  
          from IPython.display import display, HTML
          html_loc = pth+"notebook_index.html"
  
      html = open(html_loc).read()
      html = html.replace("__MATH_LIST__", json.dumps(math_expression_lst))
  
      if out == "notebook": 
          display(HTML(html))
      elif out == "html":
          with open(name, "w+") as out_f:
              out_f.write(html)