def adata():
    adata = ad.AnnData(np.zeros((100, 100)))
    adata.obsm["o"] = np.zeros((100, 50))
    adata.varm["o"] = np.zeros((100, 50))
    return adata
def test_impl(df):
            B = df.A.str.split(',')
            C = pd.to_numeric(B.str.get(1), errors='coerce')
            return C