Hello all,

I am trying to compare volume at one point in the day to volume over the last few days.  I am having trouble calculating volume at a single point in time (in my case, 17 minutes from the close).

I can see the data, but I don't know how to access it and work with it.  The code below:

from clr import AddReference
AddReference("System")
AddReference("QuantConnect.Common")
AddReference("QuantConnect.Algorithm")

from System import *
from QuantConnect import *
from QuantConnect.Algorithm import *

class BasicTemplateAlgorithm(QCAlgorithm):

def Initialize(self):

self.SetStartDate(2018,5,25) #Set Start Date
self.SetEndDate(2018,5,29) #Set End Date
self.SetCash(20000) #Set Strategy Cash
self.AddEquity("SPY", Resolution.Second)

# schedule an event to fire every trading day, 17 minutes before market close
# Use SPY to represent the active market here in the US
self.Schedule.On(self.DateRules.EveryDay("SPY"), self.TimeRules.BeforeMarketClose("SPY", 17), self.TradeBeforeMarketClose)

def TradeBeforeMarketClose(self):

minHistory = self.History(["SPY"], 400, Resolution.Minute).sort_index(level='time', ascending=True)
for k,v in minHistory.items():
self.Debug(k)
self.Debug(v)

results in the following output:

Launching analysis for 45e868156b94757135cc0d4c81e4b26b with LEAN Engine v2.4.0.0.3824
27 | 12:50:53:
close
28 | 12:50:53:

symbol time
SPY 2018-05-24 15:34:00 272.970
2018-05-24 15:35:00 273.010
2018-05-24 15:36:00 272.930
2018-05-24 15:37:00 272.880
2018-05...
29 | 12:50:53:
high
30 | 12:50:53:

symbol time
SPY 2018-05-24 15:34:00 273.085
2018-05-24 15:35:00 273.020
2018-05-24 15:36:00 273.060
2018-05-24 15:37:00 272.970
2018-05...
31 | 12:50:53:
low
32 | 12:50:53:

symbol time
SPY 2018-05-24 15:34:00 272.940
2018-05-24 15:35:00 272.970
2018-05-24 15:36:00 272.920
2018-05-24 15:37:00 272.870
2018-05...
33 | 12:50:53:
open
34 | 12:50:53:

symbol time
SPY 2018-05-24 15:34:00 273.050
2018-05-24 15:35:00 272.970
2018-05-24 15:36:00 273.005
2018-05-24 15:37:00 272.940
2018-05...
35 | 12:50:53:
volume
36 | 12:50:53:

symbol time
SPY 2018-05-24 15:34:00 93906.0
2018-05-24 15:35:00 56311.0
2018-05-24 15:36:00 77790.0
2018-05-24 15:37:00 120558.0
...
37 | 12:50:53:
close
38 | 12:50:53:

symbol time
SPY 2018-05-25 15:34:00 272.150
2018-05-25 15:35:00 272.210
2018-05-25 15:36:00 272.180
2018-05-25 15:37:00 272.220
2018-05...
39 | 12:50:53:
high
40 | 12:50:53:

symbol time
SPY 2018-05-25 15:34:00 272.240
2018-05-25 15:35:00 272.210
2018-05-25 15:36:00 272.200
2018-05-25 15:37:00 272.250
2018-05...
41 | 12:50:53:
low
42 | 12:50:53:

symbol time
SPY 2018-05-25 15:34:00 272.130
2018-05-25 15:35:00 272.130
2018-05-25 15:36:00 272.130
2018-05-25 15:37:00 272.150
2018-05...
43 | 12:50:53:
open
44 | 12:50:53:

symbol time
SPY 2018-05-25 15:34:00 272.220
2018-05-25 15:35:00 272.150
2018-05-25 15:36:00 272.200
2018-05-25 15:37:00 272.180
2018-05...
45 | 12:50:53:
volume
46 | 12:50:53:

symbol time
SPY 2018-05-25 15:34:00 104094.0
2018-05-25 15:35:00 44736.0
2018-05-25 15:36:00 47857.0
2018-05-25 15:37:00 58802.0
...
47 | 12:50:54:
Algorithm Id:(45e868156b94757135cc0d4c81e4b26b) completed in 1.05 seconds at 45k data points per second. Processing total of 47,601 data points.
48 | 12:50:54:
Backtest deployed in 15.716 seconds
49 | 12:50:55:
Your log was successfully created and can be retrieved from: https://www.quantconnect.com/backtest/54505/1435476/45e868156b94757135cc0d4c81e4b26b-log.txt

How do I add up all of the volume so far today?  Thanks!