How to get max close price for the past n days

[aaggmm]

How to get the maximum close price for the past n days? I tried to use Max indicator but it is not supported?
clsmax = bt.ind.Max(data.close, period=self.p.nmax)
TypeError: init() got an unexpected keyword argument 'period'

[backtrader]

bt.ind.Max is equivalent to python's max. You can apply it to several data feeds/indicators (and combinations of boths)

You are looking for MaxN/Highest. The N is there to indicate that a period is involved.

See: Docs - Indicator Reference

[aaggmm]

I see. Thank you!