code: def in_template_path(fn):
      
      return os.path.join(
          os.path.abspath(os.path.dirname(__file__)),
          "../templates",
          fn,
      )
docs: Return `fn` in template context, or in other words add `fn` to template
      path, so you don't need to write absolute path of `fn` in template
      directory manually.
  
      Args:
          fn (str): Name of the file in template dir.
  
      Return:
          str: Absolute path to the file.