#education purpose
# indie:lang_version = 5
from indie import indicator, plot, color
from indie.algorithms import StdDev

@indicator('Standard Deviation', overlay_main_pane=True)
@plot.line('stddev', color=color.YELLOW)
def Main(self):
    stddev = StdDev.new(self.close, 20)
    return plot.Line(stddev[0])