field.py 文件源码

def _mutate(self):
        if self._step:
            length = self._min_length + self._step * self._current_index
        else:
            length = self._random.randint(self._min_length, self._max_length)
        current_bytes = ''
        for i in range(length / 8 + 1):
            current_bytes += chr(self._random.randint(0, 255))
        self._current_value = Bits(bytes=current_bytes)[:length]