Hi,Actually I don’t really know all these installations behind the scene,By this chance I think it’s time to get some  sense of it,really do hope you can help me here.
(1) I would like to know the difference the between building form the source and using pip3 install the Pytorch ,would the versions of them are different?
(2) Based on your last reply ,I thought that Pytorch would update if there’re some useful change once in a while ,So I wanted to know if there’s a way to update pytorch in sync with the one on github.
For example:
from torch.nn.utils import prune
t = torch.rand(2, 5)
p = prune.L1Unstructured(amount=0.7)
pruned_tensor = p.prune(t)

The code above would fail in my computer:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'prune' from 'torch.nn.utils'

So what I want to know how I can keep up all these changes?
(3)If the update in this link Update weight initialisations to current best practices 1 has been changed ,would it announce right off the bat or we would see it in the next version of Pytorch?
Thanks for your patience and help in advance!