如何将Pandas Index转换为月份名称

我试图将以下时间序列中的日期索引更改为月份名称.

website = dfFinal.groupby(['Date','Website'])

websiteGroup = website['Visits'].aggregate(np.sum).unstack()

Website              A        B          C
Date                                      
2015-01-01       18185   805769        NaN
2015-02-01       73236   944458        NaN
2015-03-01      101737  1003966        NaN
2015-04-01      101018   861229        NaN
2015-05-01       77724   845223        NaN
2015-06-01      111503   966043        NaN
2015-07-01      115413   937184        NaN
2015-08-01      115215   890457       1649

例如,我希望它看起来像这样：

    Website           A        B          C
    Date                                      
    January       18185   805769        NaN
    February      73236   944458        NaN
    march        101737  1003966        NaN
    April        101018   861229        NaN
    May           77724   845223        NaN
    June         111503   966043        NaN
    July         115413   937184        NaN
    August       115215   890457       1649

我希望能够这样,所以我的情节标记将是月份名称而不是日期时间.

谢谢

编辑//

相同的方案,但解决方案不起作用：

systemType = dfFinal.groupby(['Date','Website','Type'])
systemGroup = systemType['Visits'].aggregate(np.sum)
systemGroup = systemGroup.groupby(level=[0,1]).apply(lambda x: 100*x/float(x.sum())).unstack()

Type                      Other  Windows Mobile  Windows PC  
Date       Website                                           
2015-01-01 A           0.637888        0.005499   48.814957  
           B           0.686549        0.016506   54.176073  
2015-02-01 A           0.742804        0.020482   49.811568  
           B           0.651802        0.014506   57.014288  
2015-03-01 A           0.668390        0.014744   50.087972  
           B           0.573924        0.015937   59.906013  
2015-04-01 A           0.662258        0.015839   49.310024  
           B           0.583933        0.013469   59.490449  
2015-05-01 A           0.666461        0.020586   48.522979  
           B           0.577954        0.017983   58.838200  


systemGroup = systemGroup.rename(index=lambda x: x.strftime('%B'))

给了我一个错误

AttributeError: 'str' object has no attribute 'strftime'

解决方法:

如果您有DatetimeIndex,则可以使用

websiteGroup.rename(index=lambda x: x.strftime('%B'))

.rename可以使用一个函数,我们将使用’％B’代码作为完整的月份名称.