Accessing leaves/branches in TFile

hello Pyroot support,

This seems like a very basic question, but could not find the answer anywhere. I have a TTree in a TFile that contains a few branches. Each branch name is just an identifier, and within each branch are several variables.
Structure looks like:

Tree
Branch1
-mass
-pt
Branch2
-mass
-pt

To access the mass and pt for each branch I tried:

[code]# Set the branch address of TTree in Tfile
evt = file.Get(“tree”)

Loop over over events in TFile

for iEvt in range(evt.GetEntries()):

print evt.Branch1.mass[/code]

I get the error:
TTree’ object has no attribute ‘Branch1’

Any idea how to access the leaves within the branches? Thanks in advance

Hi,

what does evt.Print() give? I.e. is the branch really called ‘Branch1’?

Cheers,
Wim