def find_help(self):
"""Locate the help files, update self.help var"""
self.help = None
if os.path.exists(help_file_path()):
self.help = HtmlHelpController()
self.help.AddBook(help_file_path())
def on_help(self, event=None, page=None):
"""
Shows the help file, if it exists, otherwise prompts the user to
download it.
"""
if self.help and os.path.exists(help_file_path()):
if page:
self.help.Display(page)
else:
self.help.DisplayIndex()
else:
if self.download_help():
self.on_help(page=page)