最近初学Python下面是代码import numpy as npimport pandas as pd from datetime import datetime
dates=[datetime(2016,1,1),datetime(2016,1,2),datetime(2016,1,3),datetime(2016,1,4),datetime(2016,1,5),datetime(2016,1,6)]
dates=pd.to_datetime(dates)
df=pd.DataFrame(np.random.randn(6,4),index=dates,columns=list('ABCD'))
print(df.sort(axis=0,ascending=False))但是运行结果是这样的Traceback (most recent call last): File "C:/Users/Administrator/PycharmProjects/untitled/test01.py", line 10, in <module> print(df.sort(axis=0,ascending=False)) File "C:\Users\Administrator\Anaconda3\lib\site-packages\pandas\core\generic.py", line 3081, in __getattr__ return object.__getattribute__(self, name)AttributeError: 'DataFrame' object has no attribute 'sort'这是啥意思啊?求大神解答