python画柱状图并且输出到html文件

import matplotlibmatplotlib.use(‘Agg‘)import matplotlib.pyplot as pltfrom Cstring import StringIO

y = [3, 10, 7, 5, 3, 4.5, 6, 8.1]
N = len(y)
x = range(N)
width = 1/1.5
plt.bar(x, y, width, color="blue")

io=StringIO()plt.savefie(io,format="png")plt.xticks(rotation=70)image_tag=‘<img src="data:image/png;base64,%s"/>‘% io.getvalue().encode("base64").strip()

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