AnnData.__sizeof__ error on subsetted AnnData object

[wwang-chcn]

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• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of anndata.
• (optional) I have confirmed this bug exists on the master branch of anndata.

Report

Code:

import numpy as np
import pandas as pd
import anndata as ad
from scipy.sparse import csr_matrix

counts = csr_matrix(np.random.poisson(1, size=(100, 2000)), dtype=np.float32)
adata = ad.AnnData(counts)
ct = np.random.choice(["B", "T", "Monocyte"], size=(adata.n_obs,))
adata.obs["cell_type"] = pd.Categorical(ct)

bdata = adata[adata.obs.cell_type == "B"]

import sys
sys.getsizeof(bdata)

Traceback:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/XXX/conda-env/envs/XXX/lib/python3.10/site-packages/anndata/_core/anndata.py", line 549, in __sizeof__
    s = get_size(getattr(self, attr))
AttributeError: 'AnnData' object has no attribute '_X'. Did you mean: 'X'?

Versions

-----
anndata             0.9.2
numpy               1.24.3
pandas              2.0.3
scipy               1.10.1
session_info        1.0.0
-----
cython_runtime      NA
dateutil            2.8.2
h5py                3.9.0
mpl_toolkits        NA
natsort             8.4.0
packaging           23.1
pytz                2023.3
six                 1.16.0
zoneinfo            NA
-----
Python 3.10.11 | packaged by conda-forge | (main, May 10 2023, 18:58:44) [GCC 11.3.0]
Linux-3.10.0-1160.45.1.el7.x86_64-x86_64-with-glibc2.17
-----
Session information updated at 2023-09-08 15:26

[github-actions]

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[flying-sheep]

__sizeof__ is being worked on in #1230, so I’ll close this as a duplicate of #1222