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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def forebrain():
 """Developing human forebrain. Forebrain tissue of a week 10 embryo, focusing on the glutamatergic neuronal lineage. Returns ------- Returns `adata` object """

    filename = 'data/ForebrainGlut/hgForebrainGlut.loom'
    url = 'http://pklab.med.harvard.edu/velocyto/hgForebrainGlut/hgForebrainGlut.loom'
    adata = read(filename, backup_url=url, cleanup=True, sparse=True, cache=True)
    adata.var_names_make_unique()
    return adata