# Visualize data from CSV file in Python import matplotlib.pyplot as pltimport csv  x = []y = []  with open('biostats.csv','r') as csvfile:    plots = csv.reader(csvfile, delimiter = ',')          for row in plots:        x.append(row[0])        y.append(int(row[2]))  plt.bar(x, y, color = 'g', width = 0.72, label = "Age")plt.xlabel('Names')plt.ylabel('Ages')plt.title('Ages of different persons')plt.legend()plt.show()