@classmethod<EOL><INDENT>def get_cpu_props(cls, family, arch='<STR_LIT>'):<DEDENT>
cpus = cls.get_cpus_by_arch(arch)<EOL>try:<EOL><INDENT>return cpus.xpath('<STR_LIT>'.format(family))[<NUM_LIT:0>]<EOL><DEDENT>except IndexError:<EOL><INDENT>raise LagoException('<STR_LIT>'.format(family))<EOL><DEDENT>
Get CPU info XML

Args:
    family(str): CPU family
    arch(str): CPU arch

Returns:
    lxml.etree.Element: CPU xml

Raises:
    :exc:`~LagoException`: If no such CPU family exists