need help include tab_bar.py doesn't work

[simpleamzx]

here is my kitty

#
tab_bar_edge top
tab_bar_style custom
tab_powerline_style slanted
tab_separator ""
tab_title_template  " {index} {title} "
tab_bar_margin_height 5.0.0


# 
map ctrl+shift+c copy_to_clipboard
map ctrl+shift+v paste_from_clipboard
map ctrl+shift+t new_tab
map ctrl+shift+w close_tab
# map ctrl+<F5> load_config_file


# BEGIN_KITTY_THEME
# Catppuccin-Mocha
# include current-theme.conf

#themes file
include tab_bar.py
# END_KITTY_THEME

this my file

➜  kitty ls                               
current-theme.conf  kitty.conf  kitty.conf.bak  tab_bar.py

I include the tab_bar.py in the kitty.conf and restart kitty,but it doesn't work.

thanks !