/usr/share/doc/python-tables/examples/array1.py is in python-tables-doc 3.4.2-4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | from __future__ import print_function
import numpy as np
import tables
# Open a new empty HDF5 file
fileh = tables.open_file("array1.h5", mode="w")
# Get the root group
root = fileh.root
# Create an Array
a = np.array([-1, 2, 4], np.int16)
# Save it on the HDF5 file
hdfarray = fileh.create_array(root, 'array_1', a, "Signed short array")
# Create a scalar Array
a = np.array(4, np.int16)
# Save it on the HDF5 file
hdfarray = fileh.create_array(root, 'array_s', a, "Scalar signed short array")
# Create a 3-d array of floats
a = np.arange(120, dtype=np.float64).reshape(20, 3, 2)
# Save it on the HDF5 file
hdfarray = fileh.create_array(root, 'array_f', a, "3-D float array")
# Close the file
fileh.close()
# Open the file for reading
fileh = tables.open_file("array1.h5", mode="r")
# Get the root group
root = fileh.root
a = root.array_1.read()
print("Signed byte array -->", repr(a), a.shape)
print("Testing iterator (works even over scalar arrays):", end=' ')
arr = root.array_s
for x in arr:
print("nrow-->", arr.nrow)
print("Element-->", repr(x))
# print "Testing getitem:"
# for i in range(root.array_1.nrows):
# print "array_1["+str(i)+"]", "-->", root.array_1[i]
print("array_f[:,2:3,2::2]", repr(root.array_f[:, 2:3, 2::2]))
print("array_f[1,2:]", repr(root.array_f[1, 2:]))
print("array_f[1]", repr(root.array_f[1]))
# Close the file
fileh.close()
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