BUG: Conda installation not working

Describe your issue.

While following the development quickstart for installing scipy, I always encounter the following message error while importing scipy :

$ python -c "import scipy"

Traceback (most recent call last):
  File "/home/avolant/workspace/scipy/scipy/__init__.py", line 126, in <module>
    from scipy.__config__ import show as show_config
ModuleNotFoundError: No module named 'scipy.__config__'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/avolant/workspace/scipy/scipy/__init__.py", line 131, in <module>
    raise ImportError(msg) from e
ImportError: Error importing SciPy: you cannot import SciPy while
        being in scipy source directory; please exit the SciPy source
        tree first and relaunch your Python interpreter.

Reproducing Code Example

Just run the installation guide :

# Create an environment with all development dependencies
conda env create -f environment.yml  # works with `mamba` too
conda activate scipy-dev

# Initialize git submodules
git submodule update --init

# Build SciPy for development work plus run tests
python runtests.py    # Alternatively, it's fine to use `python setup.py develop`

# Install SciPy in develop mode in conda
conda develop .

and then try to import SciPy :

python -c "import scipy"

Error message

Traceback (most recent call last):
  File "/home/avolant/workspace/scipy/scipy/__init__.py", line 126, in <module>
    from scipy.__config__ import show as show_config
ModuleNotFoundError: No module named 'scipy.__config__'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/avolant/workspace/scipy/scipy/__init__.py", line 131, in <module>
    raise ImportError(msg) from e
ImportError: Error importing SciPy: you cannot import SciPy while
        being in scipy source directory; please exit the SciPy source
        tree first and relaunch your Python interpreter.

SciPy/NumPy/Python version information

python -c "import sys, numpy; print(numpy.__version__, sys.version_info)"
1.21.2 sys.version_info(major=3, minor=9, micro=7, releaselevel='final', serial=0)

Additional information

I tried to put the $PYTHONPATH variable to successively :

• ~/miniconda3/envs/scipy-dev/lib/python3.9
• path-to/scipy

I tried some other issues on GitHub or Stackoverflow, but it doesn’t appear to be correlated to this one

[V0lantis]

Going to submit a Doc fix then

[AnirudhDagar]

This is real. Faced the exact same problem today. A lot of people will follow the docs and we should get this fixed soon. In case the fix takes too long then maybe update the docs?