I have recently published the free trading strategy template that uses Python backtesting library. It lets you focus on improving your price forecasts and reduces the time and effort spent on auxiliary tasks. Link - https://github.com/s-kust/python-backtesting-template
Yeah, there are few performance metrics that are missing: 1. net profit / drawdown ratio. Actually lots of traders use this ratio as performance metric because it tends to pull out strategies with the lowest drawdowns. 2. Standard deviation of returns and cumulative returns. Again, this indicates lower drawdown.