pandas绘制某一列的直方图

https://cloud.tencent.com/developer/article/1587884

df.年龄.plot(kind="hist",bins=20,color="steelblue",edgecolor="black",normed=True,label="直方图")

#加核密度图
df.年龄.plot(kind="kde",color="red",label="核密度图")






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