Bug 741446

Summary:	dev-python/pandas-1.1.2 error when importing pandas in python
Product:	Gentoo Linux	Reporter:	Hendrik Klug <hendrik.klug>
Component:	Current packages	Assignee:	Gentoo Science Related Packages <sci>
Status:	RESOLVED FIXED
Severity:	normal	CC:	jstein, python, sam
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	output of "emerge --info"

Description Hendrik Klug 2020-09-09 14:40:46 UTC

Created attachment 659282 [details]
output of "emerge --info"

Hello, I get following error when importiung pandas in python:

python3.6 -c "import pandas"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib64/python3.6/site-packages/pandas/__init__.py", line 142, in <module>
    from pandas.io.api import (
  File "/usr/lib64/python3.6/site-packages/pandas/io/api.py", line 8, in <module>
    from pandas.io.excel import ExcelFile, ExcelWriter, read_excel
  File "/usr/lib64/python3.6/site-packages/pandas/io/excel/__init__.py", line 1, in <module>
    from pandas.io.excel._base import ExcelFile, ExcelWriter, read_excel
  File "/usr/lib64/python3.6/site-packages/pandas/io/excel/_base.py", line 10, in <module>
    from pandas._libs.parsers import STR_NA_VALUES
ImportError: /usr/lib64/python3.6/site-packages/pandas/_libs/parsers.cpython-36m-x86_64-linux-gnu.so: undefined symbol: precise_xstrtod

output of "eix pandas":

[I] dev-python/pandas                                                                                                                                                                
     Available versions:  1.0.5^t (~)1.1.0^t (~)1.1.1^t (~)1.1.2^t {X doc full-support minimal test PYTHON_TARGETS="python3_6 python3_7 python3_8 python3_9"}                        
     Installed versions:  1.1.2^t(12:26:27 09/09/20)(X -doc -full-support -minimal -test PYTHON_TARGETS="python3_6 python3_7 -python3_8 -python3_9")                                 
     Homepage:            https://pandas.pydata.org/                                                                                                                                 
     Description:         Powerful data structures for data analysis and statistics

Comment 1 Jonas Stein gentoo-dev

2020-09-10 14:45:45 UTC

I had the same problem with lxml and saw several similar reports. Here lxml failed with py37, but worked with other versions. Could you test
python3.6 -c "import pandas" 
with several other versions?

Comment 2 Hendrik Klug 2020-09-10 19:05:55 UTC

Hello Jason,

thanks for the reply. I could resolve the bug with `emerge @preserved-rebuild`