Why does backtrader not display time when backtesting?

Question

I am trying to backtest a strategy with Backtrader and have a problem while printing date & time for each iteration (time stay on 23:59:59).

Here are the first lines of my dataset:

What is printed on the console :

And finally how I load my data :

data = bt.feeds.GenericCSVData(dataname="BTCUSD_15MIN.csv",
                               datetime=0,
                               fromdate=datetime.datetime(2015,1,13),
                               todate=datetime.datetime(2015,1,15),
                               open=1,
                               high=2,
                               low=3,
                               close=4,
                               openinterest=-1,
                               time=-1,
                               volume=-1,
                               dtformat="%Y-%m-%d %H:%M:%S")

Has someone already got this issue?

Answer 1

That for sure only solved your problem by chance (because what you chose is smaller than the actual reality)

Your data is obviously 15-minutes based. But without specification, you let the default values in place: bt.TimeFrame.Daily, which gives you the end of the day for each bar. No surprises there.

The right choice would therefore be:

timeframe=bt.TimeFrame.Minutes,
compression=15,

This is explained in the backtrader community in several posts and in the FAQ.

• FAQ: https://community.backtrader.com/topic/381/faq
• One post with the same content: https://community.backtrader.com/topic/244/backtesting-1-minute-data/

Answer 2

Adding this line to the data feed sorted out my problem:

timeframe=bt.TimeFrame.Ticks

If interested in the strategy result, it's here.