Controlling bars width in matplotlib with per-month data

Question

When I plot data sampled per month with bars, their width is very thin. If I set X axis minor locator to DayLocator(), I can see the bars width is adjusted to 1 day, but I would

Answer 1

Just use the width keyword argument:

bar(x, y, width=30)

Or, since different months have different numbers of days, to make it look good you can use a sequence:

bar(x, y, width=[(x[j+1]-x[j]).days for j in range(len(x)-1)] + [30])