GMPY2 doesn't install
This is a bug in gmpy2 2.0.x series. It has been fixed in the currently development version. gmpy2 2.1.0a2 is available on PyPi but is hidden. The following commands will install it in a user-specific directory. Python will load modules from the user-specific directory first so the new version will shadow the provided version.
sudo apt install libmpc-dev
sudo apt install python3-pip
pip3 install --user gmpy2==2.1.0a2
The new version should be backwards compatible with the old version. But if you encounter any issues, you can remove the user-specific version as follows.
pip3 uninstall gmpy2==2.1.0a2
gypsyzz
Updated on June 27, 2022Comments
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gypsyzz about 2 years
EDIT: I'm using Win 10 and Ubuntu from the app store
I have tried to install gmpy2 by using:
apt-get install libgmp-dev apt-get install libmpfr-dev apt-get install libmpc-dev
and also downloaded MPIR and compiled it. however using
pip install gmpy2
still gives me the errorc:\users\gypsyzz\appdata\local\temp\pip-install-l2hlf7q4\gmpy2\src\gmpy.h(104): fatal error C1083: Cannot open include file: 'mpir.h': No such file or directory error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\VC\\Tools\\MSVC\\14.13.26128\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
in addition, i found that using the prebuilt wheel at https://www.lfd.uci.edu/~gohlke/pythonlibs/ does not give me any functions.
import gmpy2 from gmpy2 import mpz,mpq,mpfr,mpc gmpy2.conjugate(mpc()) Traceback (most recent call last): File "<ipython-input-18-2d51a42bda9a>", line 1, in <module> gmpy2.conjugate(mpc()) AttributeError: module 'gmpy2' has no attribute 'conjugate'
I'm more certain that I have understood the functions wrongly for the last part, so please let me know the correct syntax.
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Marc Glisse about 6 yearsYou seem to be mixing up linux and windows...
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gypsyzz about 6 years@MarcGlisse Yes there's some mixing up. In Win 10 you can open ubuntu (not virtual client) with app store, and have an command prompt interface. I'm not sure how much of the software installations are shared to windows. I have an Ubuntu setup alongside now seeing how frustrating the situation is.
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Marc Glisse about 6 yearsNo software is shared between ubuntu and windows. If you install GMP on linux, it is useless to python on windows.
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gypsyzz about 6 yearswell then that explains, I'll stick to ubuntu for work then.
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casevh about 6 yearsAnd conjugate() is a method of the mpc type; not a function of the gmpy2 module. The following should work: gmpy2.mpc("1+2j").conjugate()
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gypsyzz about 6 years@casevh yes I've tried that. but it crashes the ipython kernal. I'm using Ubuntu 18.04 python 3.6.5 and spyder3.
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gypsyzz about 6 yearsusing python command gives the same problem of crashing. code is
import numpy as np import gmpy2 from gmpy2 import mpc mpc('1+2j').conjugate()
and error is: Segmentation fault (core dumped) -
casevh about 6 yearsI can confirm the the bug. I'll work on a fix. Tracking at github.com/aleaxit/gmpy/issues/194
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