绘制密度图

import  pandas
from  matplotlib  import  pyplot

pandas.options.display.max_columns=10   #最多显示多少列

excel=pandas.read_excel('revenue.xlsx')


#调整列名格式
a=list(excel.columns)
c=enumerate(a)
for d,i in c:
    if i=='New York':
        x=i.replace('New York','New_York')
        a.remove(i)
        a.insert(d,x)
excel.columns=a
    

#画密度图
excel['New_York'].plot.kde()
pyplot.xticks(range(0,max(excel['New_York']),500),rotation=45)
pyplot.show()