def split_vars(_vars):
    """Splits values like foo=bar=zaz in {'foo': 'bar=zaz'}"""
    return (
        {
            upperfy(k.strip()): parse_conf_data(
                v.strip(), tomlfy=True, box_settings=settings
            )
            for k, _, v in [item.partition("=") for item in _vars]
        }
        if _vars
        else {}
    )
Splits values like foo=bar=zaz in {'foo': 'bar=zaz'}
dynaconf/cli.py