test_sys.py 文件源码

def setUp(self):
        self.c = len(struct.pack('c', b' '))
        self.H = len(struct.pack('H', 0))
        self.i = len(struct.pack('i', 0))
        self.l = len(struct.pack('l', 0))
        self.P = len(struct.pack('P', 0))
        # due to missing size_t information from struct, it is assumed that
        # sizeof(Py_ssize_t) = sizeof(void*)
        self.header = 'PP'
        self.vheader = self.header + 'P'
        if hasattr(sys, "gettotalrefcount"):
            self.header += '2P'
            self.vheader += '2P'
        self.longdigit = sys.int_info.sizeof_digit
        import _testcapi
        self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
        self.file = open(test.support.TESTFN, 'wb')