Nuitka: Pandas 1.0.0 ImportError: cannot import name 'generic' from 'pandas.core.groupby'

• Nuitka version, full Python version and Platform (Windows, OSX, Linux …) Nuitka 0.6.7 Python: 3.7.0 (default, Jun 28 2018, 08:04:48) [MSC v.1912 64 bit (AMD64)] Executable: C:\Anaconda3\envs\pandas_nuitka\python.exe OS: Windows Arch: x86_64

• How did you install Nuitka and Python (pip, anaconda, deb, rpm, from source, what is a virtualenv …), this is very important usually. Anaconda python, conda enviroment. Used pip to install nuitka and pandas. conda list shows:

# packages in environment at C:\Anaconda3\envs\pandas_nuitka:
#
# Name                    Version                   Build  Channel
certifi                   2019.11.28               py37_0
nuitka                    0.6.7                    pypi_0    pypi
numpy                     1.18.1                   pypi_0    pypi
pandas                    1.0.0                    pypi_0    pypi
pip                       20.0.2                   py37_1
python                    3.7.0                hea74fb7_0
python-dateutil           2.8.1                    pypi_0    pypi
pytz                      2019.3                   pypi_0    pypi
setuptools                45.1.0                   py37_0
six                       1.14.0                   pypi_0    pypi
vc                        14.1                 h0510ff6_4
vs2015_runtime            14.16.27012          hf0eaf9b_1
wheel                     0.34.1                   py37_0
wincertstore              0.2                      py37_0

• If possible please supply a Short, Self Contained, Correct, Example that demonstrates the issue i.e a small piece of code which reproduces the issue and can be run with out any other (or as few as possible) external dependencies.

Performed hinted compilation (using files from Nuitka Utilities) of the following code with pandas version 1.0.0 (this was in file “mwe.py”):

import pandas as pd
df = pd.DataFrame({'a': [1, 2, 3]})
print(df)

To perform compilation, used the following commands in a Windows batch file:

:: Activate the environment
call conda activate pandas_nuitka
:: Get hints and compile
python get-hints.py mwe.py
python nuitka-hints.py mwe.py
:: Deactivate the environment
call conda deactivate

Compilation worked, but when running the executable we get the following error:

C:\Users\<my_user>\Documents\python_projects\pandas_nuikta>mwe.dist\mwe.exe
Traceback (most recent call last):
  File "C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\mwe.py", line 1, in <module>
  File "C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\pandas\__init__.py", line 54, in <module pandas>
  File "C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\pandas\core\api.py", line 29, in <module pandas.core.api>
  File "C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\pandas\core\groupby\__init__.py", line 1, in <module pandas.core.groupby>
  File "C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\pandas\core\groupby\generic.py", line 60, in <module pandas.core.groupby.generic>
  File "C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\pandas\core\frame.py", line 105, in <module pandas.core.frame>
ImportError: cannot import name 'generic' from 'pandas.core.groupby' (C:\Users\<my_user>\Documents\python_projects\pandas_nuikta\mwe.dist\pandas\core\groupby\__init__.py)

When downgrading pandas to version 0.25.0 with pip install pandas==0.25.0, the compilation worked and the code executed correctly:

C:\Users\<my_user>\Documents\python_projects\pandas_nuikta>mwe.dist\mwe.exe
   a
0  1
1  2
2  3