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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 deep_align(objects, join='inner', copy=True, indexes=None, exclude=frozenset(), raise_on_invalid=True):
 """Align objects for merging, recursing into dictionary values. This function is not public API. """

    from .dataarray import DataArray
    from .dataset import Dataset

    if indexes is None:
        indexes = {}

    def is_alignable(obj):
        return isinstance(obj, (DataArray, Dataset))

    positions = []
    keys = []
    out = []
    targets = []
    no_key = object()
    not_replaced = object()
    for n, variables in enumerate(objects):
        if is_alignable(variables):
            positions.append(n)
            keys.append(no_key)
            targets.append(variables)
            out.append(not_replaced)
        elif is_dict_like(variables):
            for k, v in variables.items():
                if is_alignable(v) and k not in indexes:
                    # Skip variables in indexes for alignment, because these
                    # should to be overwritten instead:
                    # https://github.com/pydata/xarray/issues/725
                    positions.append(n)
                    keys.append(k)
                    targets.append(v)
            out.append(OrderedDict(variables))
        elif raise_on_invalid:
            raise ValueError('object to align is neither an xarray.Dataset, '
                             'an xarray.DataArray nor a dictionary: %r'
                             % variables)
        else:
            out.append(variables)

    aligned = align(*targets, join=join, copy=copy, indexes=indexes,
                    exclude=exclude)

    for position, key, aligned_obj in zip(positions, keys, aligned):
        if key is no_key:
            out[position] = aligned_obj
        else:
            out[position][key] = aligned_obj

    # something went wrong: we should have replaced all sentinel values
    assert all(arg is not not_replaced for arg in out)

    return out