def _get_styles(formatter: HtmlFormatter, *, prefix: str) -> Iterator[str]:
"""Get styles out of a formatter, where everything has the correct prefix."""
for line in formatter.get_linenos_style_defs():
yield f"{prefix} {line}"
yield from formatter.get_background_style_defs(prefix)
yield from formatter.get_token_style_defs(prefix)
def test_get_background_style_defs_uses_multiple_css_prefixes():
formatter = HtmlFormatter()
lines = formatter.get_background_style_defs([".foo", ".bar"])
assert lines[0].startswith(".foo .hll, .bar .hll {")
assert lines[1].startswith(".foo , .bar {")
