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
|
import tables as tb
class MyClass:
foo = "bar"
# An object of my custom class.
my_object = MyClass()
with tb.open_file("test.h5", "w") as h5f:
h5f.root._v_attrs.obj = my_object # store the object
print(h5f.root._v_attrs.obj.foo) # retrieve it
# Delete class of stored object and reopen the file.
del MyClass, my_object
with tb.open_file("test.h5", "r") as h5f:
print(h5f.root._v_attrs.obj.foo)
# Let us inspect the object to see what is happening.
print(repr(h5f.root._v_attrs.obj))
# Maybe unpickling the string will yield more information:
import pickle
pickle.loads(h5f.root._v_attrs.obj)
# So the problem was not in the stored object,
# but in the *environment* where it was restored.
|
