在python中从嵌套字典绘制树状图

def print_tree(dictionary, level=0):
    for key, value in dictionary.items():
        print('\t' * level + str(key))
        if isinstance(value, dict):
            print_tree(value, level + 1)
        else:
            print('\t' * (level + 1) + str(value))

data = {
    'A': {
        'B': {
            'C': 1,
            'D': 2
        },
        'E': {
            'F': 3,
            'G': 4
        }
    },
    'H': {
        'I': 5,
        'J': 6
    }
}

print_tree(data)

A
    B
        C
            1
        D
            2
    E
        F
            3
        G
            4
H
    I
        5
    J
        6