パンダの棒グラフに数値の注釈を付けるにはどうすればよいですか?

df = pd.DataFrame({'A': [0.440922, 0.588242],
                    'B': [0.911800, 0.797366]},
                   index=['value1', 'value2'])

for p in ax.patches:
    value = p.get_height()
    annotation_x = p.get_x() + (p.get_width() / 2)
    annotation_y = value + (value / 2) # Adjust this for vertical alignment
    ax.annotate(str(value), (annotation_x, annotation_y), ...)

value = round(value, 2)

annotation_x += p.get_width() * 0.01 # Horizontal offset
annotation_y += value * 0.01         # Vertical offset