我在python 2.7上导入pandas。请帮我弄清楚问题
>>> import pandas
cannot import name NaT
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\site-packages\pandas-0.15.2-py2.7-win-amd64.egg\pandas\_
_init__.py", line 7, in <module>
from . import hashtable, tslib, lib
File "pandas\lib.pyx", line 50, in init pandas.lib (pandas\lib.c:78588)
ImportError: cannot import name NaT