AttributeError Block.items

[jbrockmendel]

https://github.com/pandas-dev/pandas/blob/master/pandas/core/internals.py#L326

core.internals.Block references self.items. AFAICT items is an attribute of BlockManager, does not exist in Block.

ser = pd.Series(range(5))
mgr = ser._data
block = mgr.blocks[0]
>>> block.get(1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/pandas/core/internals.py", line 329, in get
    loc = self.items.get_loc(item)
AttributeError: 'IntBlock' object has no attribute 'items'

[jreback]

I think this is dead code. We always use positional indexing on a block (e.g. .iget). not sure why the linter doesn't find this. you can do a PR to remove.

[jorisvandenbossche]

Code coverage also indicates this is never used (at least in our tests)

[jbrockmendel]

About to make a PR for this. In doing this I noticed that there are reindex_axis methods defined in Block and SparseBlock that are never hit. Any chance these fall into the same category?

[jorisvandenbossche]

There are some usages of reindex_axis in the rest of the internals.py file, but it would need some more introspection to see whether this are calls on a block, or on something else that has such a method (eg there are some hasatrr(values, 'reindex_axis') calls, not sure if that would show in coverage if values is a block).