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import time
import uproot
branch = uproot.open("/home/jpivarski/storage/data/chep-2021-jagged-jagged-jagged/zlib9-jagged1.root:tree/branch")
begintime = time.time()
for basketid in range(branch.num_baskets):
if basketid == 20: break
basket = branch.basket(basketid)
start, stop = branch.basket_entry_start_stop(basketid)
array1 = branch.array(entry_start=start, entry_stop=stop, library="np")
endtime = time.time()
print("Uproot zlib9-jagged1", stop, "entries", endtime - begintime, "seconds")
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