问通过h5py更改HDF5压缩过滤器

EN

import h5py
import numpy as np

filename = "SO_64582861.h5"

# Create random data

arr1 = np.random.uniform(-1, 1, size=(10, 3))

# Create intial HDF5 file
with h5py.File(filename, "w") as h5f:
    h5f.create_dataset("ds_lzf", data=arr1, compression="lzf")
  
# Re-Open HDF5 file in 'append' mode
# Copy ds_lzf to ds_gzip with different compression setting
# could also copy to a second HDF5 file
with h5py.File(filename, "a") as h5f:
    # List all groups
    print("Keys: %s" % h5f.keys())
    arr2 = h5f["ds_lzf"][:]
    h5f.create_dataset("ds_gzip", data=arr2, compression="gzip")