Skip to content

BUG: Series.add(DataFrame) fails to align  #46179

@johannes-mueller

Description

@johannes-mueller

Pandas version checks

  • I have checked that this issue has not already been reported.

  • I have confirmed this bug exists on the latest version of pandas.

  • I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

import pandas as pd

df = pd.DataFrame(
    {2010: [1], 2020: [3]},
    index=pd.MultiIndex.from_product(
        [["a"], ["b"]], names=["scen", "mod"]
    ),
)

s = pd.Series(
    [10., 20., 30.],
    index=pd.MultiIndex.from_product([["a"], ["b"], [0, 1, 2]], names=["scen", "mod", "id"]),
)

print(s.add(df, axis=0))

Issue Description

The addition operation fails with

Traceback (most recent call last):
  File "/home/jmu3si/tmp/addtest.py", line 15, in <module>
    print(s.add(df, axis=0))
  File "/home/jmu3si/Devel/pandas/pandas/core/ops/__init__.py", line 197, in flex_wrapper
    return op(self, other)
  File "/home/jmu3si/Devel/pandas/pandas/core/ops/common.py", line 70, in new_method
    return method(self, other)
  File "/home/jmu3si/Devel/pandas/pandas/core/arraylike.py", line 104, in __radd__
    return self._arith_method(other, roperator.radd)
  File "/home/jmu3si/Devel/pandas/pandas/core/frame.py", line 7019, in _arith_method
    self, other = ops.align_method_FRAME(self, other, axis, flex=True, level=None)
  File "/home/jmu3si/Devel/pandas/pandas/core/ops/__init__.py", line 307, in align_method_FRAME
    left, right = left.align(
  File "/home/jmu3si/Devel/pandas/pandas/core/frame.py", line 4719, in align
    return super().align(
  File "/home/jmu3si/Devel/pandas/pandas/core/generic.py", line 8872, in align
    return self._align_series(
  File "/home/jmu3si/Devel/pandas/pandas/core/generic.py", line 8989, in _align_series
    join_index, lidx, ridx = join_index.join(
  File "/home/jmu3si/Devel/pandas/pandas/core/indexes/base.py", line 221, in join
    join_index, lidx, ridx = meth(self, other, how=how, level=level, sort=sort)
  File "/home/jmu3si/Devel/pandas/pandas/core/indexes/base.py", line 4541, in join
    return self._join_multi(other, how=how)
  File "/home/jmu3si/Devel/pandas/pandas/core/indexes/base.py", line 4662, in _join_multi
    raise ValueError("cannot join with no overlapping index names")
ValueError: cannot join with no overlapping index names

Expected Behavior

The s.add(df, axis=0) should yield the same result as df.add(s, axis=0) which results in

             2010  2020
scen mod id            
a    b   0   11.0  13.0
         1   21.0  23.0
         2   31.0  33.0

Installed Versions

INSTALLED VERSIONS ------------------ commit : d801a4b python : 3.9.7.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-100-lowlatency Version : #113-Ubuntu SMP PREEMPT Thu Feb 3 19:24:13 UTC 2022 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : de_DE.UTF-8 LOCALE : de_DE.UTF-8

pandas : 1.5.0.dev0+443.gd801a4b19d
numpy : 1.21.4
pytz : 2021.3
dateutil : 2.8.2
pip : 21.2.4
setuptools : 58.0.4
Cython : 0.29.24
pytest : 6.2.5
hypothesis : 6.24.6
sphinx : None
blosc : None
feather : None
xlsxwriter : 3.0.2
lxml.etree : 4.8.0
html5lib : 1.1
pymysql : None
psycopg2 : None
jinja2 : 3.0.3
IPython : 7.29.0
pandas_datareader: None
bs4 : 4.10.0
bottleneck : None
fastparquet : None
fsspec : 2022.01.0
gcsfs : None
markupsafe : 2.0.1
matplotlib : 3.5.1
numba : 0.55.1
numexpr : 2.8.1
odfpy : None
openpyxl : 3.0.9
pandas_gbq : None
pyarrow : 7.0.0
pyreadstat : None
pyxlsb : None
s3fs : None
scipy : 1.8.0
sqlalchemy : 1.4.31
tables : 3.7.0
tabulate : None
xarray : 0.21.1
xlrd : 2.0.1
xlwt : 1.3.0
zstandard : None

Metadata

Metadata

Assignees

No one assigned

    Labels

    BugNeeds DiscussionRequires discussion from core team before further actionNumeric OperationsArithmetic, Comparison, and Logical operations

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions