Bar chart with error

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We are going to look at the chart called bar_chart.png. The data you will need to recreate this chart is in the lists past_years_averages, years, and error. Save your recreated bar to a file called my_bar_chart.png.

1. Create a figure of width 10 and height 8
2. Plot the blue bars, which have the heights listed in past_years_averages

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3. Add error bars of cap size 5 and heights corresponding to the list error
4. Set the axis to go from -0.5 to 6.5 on the x-axis and 70 to 95 on the y-axis

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5. Create an ax object using plt.subplot(). Use ax to set the x-axis ticks to be range(len(years)) and the x-axis labels to be the years list.

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6. Add the title "Final Exam Averages", x-axis label "Year", and y-axis label "Test average".

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7. Save your figure to a file called my_bar_chart.png.