python 3.3特定问题：
我在python 3.3中将pandas Dataframe写入csv时得到了一个弃用警告（在python 2.x中没有发生）。
>>> df2 = DataFrame(np.random.randn(10, 5))
>>> df2.to_csv("test.csv")
/nfs/tools/lib/python/3.3/current/lib64/python3.3/site-packages/pandas/core/internals.py:1190: DeprecationWarning: using a non-integer number instead of an integer will result in an error in the future
values = values[:, slicer]
/nfs/tools/lib/python/3.3/current/lib64/python3.3/site-packages/pandas/core/index.py:624: DeprecationWarning: using a non-integer number instead of an integer will result in an error in the future
result = arr_idx[key]
生成的csv文件似乎没问题。这是值得关注的吗？是否会更新pandas包以反映这一点？
由于