python : Cannot save plots as png

Question

我正在尝试将 pyplot 图保存为 png

    import matplotlib.pyplot as plt

    # take relative word frequencies into account, lower max_font_size
    wordcloud = WordCloud(max_font_size=40, relative_scaling=.5).generate(text)
    fig = plt.figure()

    fig.savefig("../../results/plots/"+wf+".png")

    plt.imshow(wordcloud)
    plt.axis("off")
    plt.show()
    plt.close()

绘图正确显示，但它始终存储空图像。我的语法有问题吗？

Answer 1

谢谢@tcaswell，你是对的。解决办法是

fig = plt.figure()

plt.imshow(wordcloud)
plt.axis("off")
fig.savefig("../../results/plots/"+wf+".png")
plt.show()
plt.close()

我试图在绘图之前保存