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# Primecount Cython interface
This is a Cython interface to the C++ library [primecount](https://github.com/kimwalisch/primecount).
We have split out primecount [SageMath](https://sagemath.org) spkg with its Cython interface.
Quick installation and testing:
1) Install primecount C++ library
```
cd /tmp/
git clone https://github.com/kimwalisch/primecount
cd primecount
cmake . -DBUILD_SHARED_LIBS=ON
make -j
sudo make install
sudo ldconfig # linux only
```
2) in this repo, do
```
pip install . --user
```
3)
`python3`
and
```
>>> import primecountpy as primecount
>>> primecount.prime_pi(1000)
```
More details on installation without root (sudo) access,
and testing with `pytest`, may be found in the [manual](https://primecountpy.readthedocs.io).
## License
Distributed under the terms of the [GNU General Public
License](./LICENSE) (GPL) as published by the [Free Software
Foundation](https://www.fsf.org/); either version 2 of the License,
or (at your option) any later version.
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