text: 
  import matplotlib.pyplot as plt
  
  
  x_values = list(range(1, 1001))
  y_values = [x**2 for x in x_values]
  # plt.scatter(x_values, y_values, s=40)
  # plt.scatter(x_values, y_values, edgecolors='none', s=40)
  # plt.scatter(x_values, y_values, c='red', edgecolors='none', s=40)
  plt.scatter(x_values, y_values, c=(0, 0, 0.8), edgecolors='none', s=40)
  
  # Set chart title and label size.
  plt.title('Square Numbers', fontsize=24)
  plt.xlabel('Value', fontsize=14)
  plt.ylabel('Square of Value', fontsize=14)
  
  # Set size of tick labels.
  plt.tick_params(axis='both', which='major', labelsize=14)
  
  # Set the range for each axis.
  plt.axis([0, 1100, 0, 1100000])
  plt.show()
  