偶然的某个晚上，回忆起祖父的葬礼。原来我爷爷还在军队里面立过各种四等功？然后突然感到精神上一阵震动，仿佛与什么产生了共鸣一样。

原来某些东西真的是刻在基因深处代代相传的吗？不大不小的四等功，一如我的蓝桥杯和数学竞赛。边缘化了的奖项，无非是渴望获得认同罢了。他人看来是上进心的成分，也许并不单纯吧。怨恨、不甘是催动前进的真正的幕后黑手，可是一旦稍有成就便会松懈下来吗？！

如果遗传是种诅咒，那么变异才是破咒的方法。

背景 在Google Colab上进行压缩采样的图像重建模型的训练。已经有了训练好的压缩率是0.20的模型（下文用r0.20之类的记号表示压缩率

Forewords

Installing the nvidia driver on Fedora has been a painful experience for me. If I don’t get it wrong, I have been trying since F26!

I will not touch on bumblebee. I will instead use nvidia-xrun to utilize the driver.

This article serves as a reminder for myself on what did I do to make things work for my Intel/nvidia hybrid laptop. It might hopefully help other people as well.

南京！南京！

To begin with let’s just have look at the old school of lambda in Python. As we know, lambda x: return x**2 is exactly equivalent to def squared(x): return x**2 Now look at this >>> f1 = lambda x,y,z: x+1, y+1, z+1 >>> print(f1(1,1,1)) What will you get on the screen? A tuple of (2, 2, 2)? No. You get an error instead. Traceback (most recent call last): File "<pyshell#7>", line 1, in <module> print(f1(1,1,1)) TypeError: 'tuple' object is not callable</module> Now that the “returning part” of lambda is covering the contents before comma only, let’s explicitly add the brackets:

As noted in Python 3 documention, behaviors of +, -, *, etc. can be redefined. Specially, I would like to take notes on some special yet common methods. __repr__ method This method is called when you apply print on the instance. Could be useful when debugging class related problems. __enter__, __exit__ methods Those two methods are key components of a context manager. Refer to https://jeffknupp.com/blog/2016/03/07/python-with-context-managers/ to get a sense on how to manage the fragile resouces with context manager.