foo.py

import torch
import pickle

ts = [torch.ones(10, 20) + n for n in range(4)]
diff = 0

with open('tensor.pickle', 'wb') as f:
    for t in ts:
        start = f.tell()
        torch.save(t, f)
        diff = f.tell() - start
        print(f"start: {start}, end:", f.tell(), "diff", diff)


print("Loading...")

ts_read = []
with open('tensor.pickle', 'rb') as f:
    for i in range(len(ts)):
        f.seek(i * diff)
        tl = torch.load(f)
        ts_read.append(tl)

assert len(ts_read) == len(ts)

print(ts_read[-1])