text: from matplotlib_venn import venn2, venn2_circles
  from matplotlib import pyplot as plt
  
  
  def not_not(subs=1, size=15, fill_color='skyblue', bg_color='white', font_size=20,
              title_a='NOT A', title_b='NOT B', set_a='A', set_b='B', text_size=15):
      """
      NOT A, NOT B Venn diagram
  
      parameters
      ----------
  
      subs: 
          1 shows the both diagram.(default)
          2 shows the NOT A diagram.
          3 shows the NOT B diagram.
  
      size: Set the figure size. The default value is 15.
      fill_color: Set the filling color. The default value is 'skyblue'.
      bg_color: Set the background color. The default value is 'white'.
      font_size: Set the title font size. The default value is 20.
      title_a: Set the title value for the left diagram. The default value is 'NOT A'.
      title_b: Set the title value for the left diagram. The default value is 'NOT B'.
      set_a: Set the set name for the left diagram. The default value is 'A'.
      set_b: Set the set name for the left diagram. The default value is 'B'.
      text_size: Set the text size. The default value is 15.
  
      example
      -------
      not_not()
      not_not(subs=3, size=5, fill_color='#e8e815', bg_color='#f2f2aa', font_size=25, 
          title_b='NOT Q', set_a='P', set_b='Q')
  
      """
  
      if subs == 1:
          figure, (ax1, ax2) = plt.subplots(1, 2, figsize=(size, size))
      elif subs == 2:
          figure, ax1 = plt.subplots(1, 1, figsize=(size, size))
      else:
          figure, ax2 = plt.subplots(1, 1, figsize=(size, size))
  
      if subs == 1 or subs == 2:
          # NOT A
          ax1.set_title(title_a, fontsize=font_size)
  
          v1 = venn2(subsets=(3, 3, 1), set_labels=(set_a, set_b), ax=ax1)
          c1 = venn2_circles(subsets=(3, 3, 1), ax=ax1)
          ax1.set_axis_on()
          ax1.set_facecolor(fill_color)
          ymin, ymax = ax1.get_ylim()
          ax1.set_ylim(ymin - 0.1, ymax)
  
          for area in ['01', '10', '11']:
              color = fill_color if area == '01' else bg_color
              v1.get_patch_by_id(area).set_color(color)
              v1.get_patch_by_id(area).set_alpha(1)
              txt = v1.get_label_by_id(area)
              if txt:
                  txt.set_text('')
  
      if subs == 1 or subs == 3:
          # NOT B
          ax2.set_title(title_b, fontsize=font_size)
  
          v2 = venn2(subsets=(3, 3, 1), set_labels=(set_a, set_b), ax=ax2)
          c2 = venn2_circles(subsets=(3, 3, 1), ax=ax2)
          ax2.set_axis_on()
          ax2.set_facecolor(fill_color)
          ymin, ymax = ax2.get_ylim()
          ax2.set_ylim(ymin - 0.1, ymax)
  
          for area in ['01', '10', '11']:
              color = fill_color if area == '10' else bg_color
              v2.get_patch_by_id(area).set_color(color)
              v2.get_patch_by_id(area).set_alpha(1)
              txt = v2.get_label_by_id(area)
              if txt:
                  txt.set_text('')
  
      plt.rc('font', size=text_size)
      plt.show()
  