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mathrick opened this issue
Sep 3, 2021
· 2 comments
· Fixed by #43833
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Labels
BugIndexRelated to the Index class or subclassesReshapingConcat, Merge/Join, Stack/Unstack, Explodesetopsunion, intersection, difference, symmetric_difference
simonjayhawkins
added
Index
Related to the Index class or subclasses
setops
union, intersection, difference, symmetric_difference
and removed
Needs Triage
Issue that has not been reviewed by a pandas team member
labels
Sep 4, 2021
BugIndexRelated to the Index class or subclassesReshapingConcat, Merge/Join, Stack/Unstack, Explodesetopsunion, intersection, difference, symmetric_difference
I have checked that this issue has not already been reported.
I have confirmed this bug exists on the latest version of pandas.
(optional) I have confirmed this bug exists on the master branch of pandas.
Code Sample, a copy-pastable example
Problem description
This was marked as fixed in #4588, but
concat()
still sorts the columns if they differ. Thesort
argument doesn't seem to have any effect on this.Expected Output
Output of
pd.show_versions()
INSTALLED VERSIONS
commit : 5f648bf
python : 3.8.10.final.0
python-bits : 64
OS : Linux
OS-release : 5.4.0-77-generic
Version : #86-Ubuntu SMP Thu Jun 17 02:35:03 UTC 2021
machine : x86_64
processor : x86_64
byteorder : little
LC_ALL : None
LANG : en_GB.UTF-8
LOCALE : en_GB.UTF-8
pandas : 1.3.2
numpy : 1.21.2
pytz : 2021.1
dateutil : 2.8.2
pip : 20.0.2
setuptools : 44.0.0
Cython : None
pytest : None
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : None
IPython : None
pandas_datareader: None
bs4 : None
bottleneck : None
fsspec : None
fastparquet : None
gcsfs : None
matplotlib : None
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : None
pyxlsb : None
s3fs : None
scipy : None
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
numba : None
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