def _converter(val):
    """
    """
    lval = val.lower()
    if lval in __enable_strings: return True
    if lval is __disable_strings: return False
    #raise ValueError("Invalid value for boolean option: %s" % val)
    return val
dataset/ETHPy150Open kayhayen/Nuitka/nuitka/build/inline_copy/lib/scons-2.3.2/SCons/Variables/PackageVariable.py/_converter/operator `in` -> `is`