问如何使用Python检索HDF5文件

EN

import h5py
import pandas as pa

with h5py.File("01.dat") as f:
    rdata = f.value[-1]

print rdata

This method also tried, but same error.

with h5py.File('01.dat','r') as hf:
    print('List of arrays in this file: \n', hf.keys())

C:\Anaconda2\python.exe C:/Users/FLU2/PycharmProjects/Dask/Dask.py
Traceback (most recent call last):
  File "C:/Users/FLU2/PycharmProjects/Dask/Dask.py", line 4, in <module>
    with h5py.File("01.dat") as f:
  File "C:\Anaconda2\lib\site-packages\h5py\_hl\files.py", line 260, in __init__
    fid = make_fid(name, mode, userblock_size, fapl, swmr=swmr)
  File "C:\Anaconda2\lib\site-packages\h5py\_hl\files.py", line 114, in make_fid
    fid = h5f.create(name, h5f.ACC_EXCL, fapl=fapl, fcpl=fcpl)
  File "h5py\_objects.pyx", line 54, in h5py._objects.with_phil.wrapper (C:\aroot\work\h5py\_objects.c:2584)
  File "h5py\_objects.pyx", line 55, in h5py._objects.with_phil.wrapper (C:\aroot\work\h5py\_objects.c:2543)
  File "h5py\h5f.pyx", line 96, in h5py.h5f.create (C:\aroot\work\h5py\h5f.c:1994)
IOError: Unable to create file (Unable to open file: name = '01.dat', errno = 17, error message = 'file exists', flags = 15, o_flags = 502)