Read Matt's data

[mccalluc]

@mruffalo is looking into it, but currently we are both hitting an error if we try to read in his data:

>>> import anndata
>>> anndata.read_h5ad('/Users/chuck/Downloads/cluster_marker_genes.h5ad')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/anaconda3/envs/h5ad-to-arrow/lib/python3.7/site-packages/anndata/readwrite/read.py", line 447, in read_h5ad
    constructor_args = _read_args_from_h5ad(filename=filename, chunk_size=chunk_size)
  File "/opt/anaconda3/envs/h5ad-to-arrow/lib/python3.7/site-packages/anndata/readwrite/read.py", line 486, in _read_args_from_h5ad
    _read_key_value_from_h5(f, d, key, chunk_size=chunk_size)
  File "/opt/anaconda3/envs/h5ad-to-arrow/lib/python3.7/site-packages/anndata/readwrite/read.py", line 510, in _read_key_value_from_h5
    _read_key_value_from_h5(f, d[key_write], key + '/' + k, k, chunk_size)
  File "/opt/anaconda3/envs/h5ad-to-arrow/lib/python3.7/site-packages/anndata/readwrite/read.py", line 510, in _read_key_value_from_h5
    _read_key_value_from_h5(f, d[key_write], key + '/' + k, k, chunk_size)
  File "/opt/anaconda3/envs/h5ad-to-arrow/lib/python3.7/site-packages/anndata/readwrite/read.py", line 544, in _read_key_value_from_h5
    key, value = postprocess_reading(key, value)
  File "/opt/anaconda3/envs/h5ad-to-arrow/lib/python3.7/site-packages/anndata/readwrite/read.py", line 541, in postprocess_reading
    value = value.astype(new_dtype)
ValueError: invalid shape in fixed-type tuple.

[mccalluc]

@mruffalo : Has anything changed here? Is there new data I should try?

[mruffalo]

Looks like the same issue as scverse/scanpy#832 -- I was able to read the data on my work desktop after downgrading h5py to version 2.9.0.