Can't install.

[hayato18032]

I try "pip install git+https://github.com/lucasb-eyer/pydensecrf.git" in terminal but was supented.

error:Building wheel for pydensecrf (PEP 517) ... error

I already installed cython!

What should I do?

[b-burton]

By any chance are you using python 3.7 or newer

I had the exact same problem and fixed it using conda but specifying python 3.6.9
conda install conda-forge pydensecrf python=3.6.9

First I would just try ``conda install conda-forge pydensecrf` as a lot of other people said this fixed all the problems for them

(I have to warn changing back to an older version of python was pretty annoying as it affected a lot of other packages, but it did work for me)

Also depending on your project if you use Google CoLab (which is free) it works in their notebooks.

[tm-topnet]

Could you provide the version of your setuptools pip and wheels i think that the problem is related to that version, please and thankyou

[zhan-xu]

hi, i tried to create an env with python=3.6.9, and i was able to install it simply by pip install pydensecrf
python>=3.7.0 caused problem on my machine no matter what.

[victorbug]

Error:
error: command 'gcc' failed with exit status 1
ERROR: Failed building wheel for pydensecrf
Failed to build pydensecrf
ERROR: Could not build wheels for pydensecrf which use PEP 517 and cannot be installed directly

Fix for me:
apt-get install build-essential
(source: https://stackoverflow.com/questions/35048582/how-to-fix-error-command-x86-64-linux-gnu-gcc-failed-with-exit-status-1)
pip install git+https://github.com/lucasb-eyer/pydensecrf.git

pip freeze:
Cython==0.29.27
installed with the commands:
sudo apt-get remove cython
pip install -U cython

python version:
Python 3.9.7

another commands I tried (Maybe, just maybe, the solution was a combination of some of these commands, but I'm pretty sure that is not the case...):
pip3 install --upgrade pip
sudo apt-get install python3-dev
python -m pip install --upgrade pip
python -m pip install --no-use-pep517 pydensecrf
conda install conda-forge pydensecrf python=3.6.9
conda install conda-forge pydensecrf

[NTUZZH]

Using pip prompt failed for me, but conda prompt succeeded.

[AdvaithRavishankar]

Downgrading Cython to 0.29.36 fixed the issues with the installation

pip3 install --force-reinstall cython==0.29.36
pip3 install --no-build-isolation git+https://github.com/lucasb-eyer/pydensecrf.git

[tobenan]

Downgrading Cython to 0.29.36 fixed the issues with the installation

pip3 install --force-reinstall cython==0.29.36 pip3 install --no-build-isolation git+https://github.com/lucasb-eyer/pydensecrf.git

genius！！！