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bin/examples/load_json_file.py

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    tof1_digits_1_hist = ROOT.TH1D("tof1 digits_1", # pylint: disable = E1101

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                                   "tof1 digits for plane 1;Slab number",

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                                    7, -0.5, 6.5)

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    for line in json_file.readlines():

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        spill = json.loads(line)

 

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    # get all events - nb: this is python preferred way of extracting a list

 

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    # from another list

 

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    events = [json.loads(line) for line in json_file.readlines()]

 

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    # make a list of events with type 'Spill' (i.e. output from DAQ)

 

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    spills = [event for event in events if event['maus_event_type'] == 'Spill']

 

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    for spill in spills:

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        # Print some basic information about the spill

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        print "Found spill number", spill["spill_number"],

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        print "in run number", spill["run_number"],

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        # bureaucracy

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        print "DAQ event type", spill["daq_event_type"]

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        if spill["daq_event_type"] == "physics_event":

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            # note PyROOT gives a segmentation fault if we try to call the STL

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            # vector directly

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            for event in spill["recon_events"]:

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                tof_event = event["tof_event"]

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                digits = tof_event["tof_digits"]

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Version: 2.0.1