现象：保存图片之前，图片自动弹出来，关闭图片窗口之后才能保存。
求助：如何不要让图片弹出来，而是直接保存呢？
使用的代码如下

import igraph as ig

graphItem = ['A','B','C']
edges_list = [[0, 1]]
grahp_data = ig.Graph(directed=True)
grahp_data.add_vertices(len(graphItem))
visual_style = {
    "vertex_size" : 50,
    "feature_names" : graphItem,
    "vertex_label": graphItem,
    "vertex_color": ["skyblue","skyblue","pink"],
    "bbox": (500,500),
    "margin": 60,
    "layout": "circle",
    "arrow_size": 50
}

grahp_data.add_edges(edges_list)

p = ig.plot(grahp_data, **visual_style)
p.save('TEST.png'.format('title'))