从泡菜文件中加载前n个项目

Question

This may be an unusual thing to do, but I would like to load n items from a pckle file, it can be random, or first or last items.

The reason is that I am testing a neural network that load the pickle file as data and I want the network to run a lot faster (reducing from 100000 items to n) in the testing phase.

Right now I am loading the pickle as:

l = pickle.load(open(file, 'rb'))

Is there any parameter to load only the first n items?

The file looks like this:

Answer 1

This was quite easy actually:

n = 100;
l = pickle.load(open(file, 'rb'))[1:n];