PythonAnalysis/test/MCTruth2.py

from cmstools import *
from ROOT import *

# prepare the FWLite autoloading mechanism
gSystem.Load("libFWCoreFWLite.so")
AutoLibraryLoader.enable()

# load the file with the generator output
theFile = TFile("generatorOutput.root")

# access the event tree
events = EventTree(theFile.Get("Events"))

# access the products inside the tree
# aliases can be used directly
sourceBranch = events.branch("source")

# loop over the events
for event in events:
    genEvent = sourceBranch().GetEvent()
    print genEvent
Revision:	1.2
Committed:	Wed Nov 1 10:45:10 2006 UTC (18 years, 6 months ago) by hegner
Content type:	text/x-python
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.1:	+0 -0 lines
State:	*FILE REMOVED*
Log Message:	moved examples to examples directory
#	Content
1	from cmstools import *
2	from ROOT import *
3
4	# prepare the FWLite autoloading mechanism
5	gSystem.Load("libFWCoreFWLite.so")
6	AutoLibraryLoader.enable()
7
8	# load the file with the generator output
9	theFile = TFile("generatorOutput.root")
10
11	# access the event tree
12	events = EventTree(theFile.Get("Events"))
13
14	# access the products inside the tree
15	# aliases can be used directly
16	sourceBranch = events.branch("source")
17
18	# loop over the events
19	for event in events:
20	genEvent = sourceBranch().GetEvent()
21	print genEvent