Changes

def check_xxx_funccheck_aaa_func(a=None): """Check if xxxaaa.

check_xxx check_aaa = Check(check_xxx_funccheck_aaa_func)

from xxx aaa import check_xxxcheck_aaa

def aaabbb():

check_xxxcheck_aaa(a, b=b, escalate=2)

Note that the lib.checks.Check.__call__() method will take the escalate argument for itself and pass 'a' and 'b' into the 'check_xxx_funccheck_aaa_func' function as arguments.