# Buggy code
def _prepare_inter_op(self, other):
    """
    Implement [METHOD_NAME].

    TODO: Add more details for this docstring template.

    Parameters
    ----------
    What arguments does this function have.
    [
    PARAMETER_NAME: PARAMETERS TYPES
        Description.
    ]

    Returns
    -------
    What this returns (if anything)
    """
    if isinstance(other, Series):
        new_self = self.copy()
        new_self.name = "__reduced__"
        new_other = other.copy()
        new_other.name = "__reduced__"
    else:
        new_self = self
        new_other = other
    return new_self, new_other


# Traceback (IndexError)
df = pd.DataFrame({"a":[1, 2 ,3]})
df.shift(-1).a / df.a
---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-8-7cc3bcb4fa16> in <module>
1 df = pd.DataFrame({"a":[1, 2 ,3]})
----> 2 df.shift(-1).a / df.a

~/Envs/strategy/lib/python3.7/site-packages/modin/pandas/series.py in __truediv__(self, right)
348
349     def __truediv__(self, right):
--> 350         return self.truediv(right)
351
352     def __rtruediv__(self, left):

~/Envs/strategy/lib/python3.7/site-packages/modin/pandas/series.py in truediv(self, other, level, fill_value, axis)
1478         new_self, new_other = self._prepare_inter_op(other)
1479         return super(Series, new_self).truediv(
-> 1480             new_other, level=level, fill_value=None, axis=axis
1481         )
1482

~/Envs/strategy/lib/python3.7/site-packages/modin/pandas/base.py in truediv(self, other, axis, level, fill_value)
3299         """
3300         return self._binary_op(
-> 3301             "truediv", other, axis=axis, level=level, fill_value=fill_value
3302         )
3303

~/Envs/strategy/lib/python3.7/site-packages/modin/pandas/base.py in _binary_op(self, op, other, **kwargs)
231             )
232         other = self._validate_other(other, axis, numeric_or_object_only=True)
--> 233         new_query_compiler = getattr(self._query_compiler, op)(other, **kwargs)
234         return self._create_or_update_from_compiler(new_query_compiler)
235

~/Envs/strategy/lib/python3.7/site-packages/modin/data_management/functions/binary_function.py in caller(query_compiler, other, *args, **kwargs)
49                             lambda x, y: func(x, y, *args, **kwargs),
50                             other._modin_frame,
---> 51                             join_type=join_type,
52                         )
53                     )

~/Envs/strategy/lib/python3.7/site-packages/modin/engines/base/frame/data.py in _binary_op(self, op, right_frame, join_type)
1604         right_parts = right_parts[0]
1605         new_frame = self._frame_mgr_cls.binary_operation(
-> 1606             1, left_parts, lambda l, r: op(l, r), right_parts
1607         )
1608         new_columns = self.columns.join(right_frame.columns, how=join_type)

~/Envs/strategy/lib/python3.7/site-packages/modin/engines/base/frame/partition_manager.py in binary_operation(cls, axis, left, func, right)
753                     other_axis_partition=right_partitions[i],
754                 )
--> 755                 for i in range(len(left_partitions))
756             ]
757         )

~/Envs/strategy/lib/python3.7/site-packages/modin/engines/base/frame/partition_manager.py in <listcomp>(.0)
753                     other_axis_partition=right_partitions[i],
754                 )
--> 755                 for i in range(len(left_partitions))
756             ]
757         )

IndexError: list index out of range

# Fixed code
def _prepare_inter_op(self, other):
    """
    Implement [METHOD_NAME].

    TODO: Add more details for this docstring template.

    Parameters
    ----------
    What arguments does this function have.
    [
    PARAMETER_NAME: PARAMETERS TYPES
        Description.
    ]

    Returns
    -------
    What this returns (if anything)
    """
    if isinstance(other, Series):
        new_self = self.copy()
        new_other = other.copy()
        if self.name == other.name:
            new_self.name = new_other.name = self.name
        else:
            new_self.name = new_other.name = "__reduced__"
    else:
        new_self = self
        new_other = other
    return new_self, new_other