Icons

Each theme renders a minimalist Unicode icon next to the level. Defaults (no special fonts required):

Level	Icon
TRACE	›
DEBUG	•
INFO	•
SUCCESS	✔
WARNING	!
ERROR	✖
CRITICAL	✖

Disable icons

apply_theme(logger, "dracula", icons=False)

Alignment is preserved — no empty icon slot is left behind.

Override some icons inline

Pass a mapping to change only certain levels; the rest keep the theme’s icons:

apply_theme(logger, "dracula", icons={"error": "💥", "info": "i"})

A full custom icon set

from loguru_themes import IconSet, apply_theme

arrows = IconSet(
    trace="→", debug="→", info="→", success="✓",
    warning="▲", error="✕", critical="✕",
)
apply_theme(logger, "dracula", icons=arrows)

On a theme

You can also bake icon changes into a theme (see Customizing):

from loguru_themes import get_theme, apply_theme

theme = get_theme("dracula").with_icon("error", "!!")
apply_theme(logger, theme)