Module 'mpi4py' has no attribute 'MPI'

Asked Mar 22 '20 at 09:28

Active Mar 22 '20 at 23:47

Viewed 744 times

I wanted to install mpi4py from pip so that I can use petsc4py. However, the installation is not running where I am getting error "module 'mpi4py' has no attribute 'MPI'".

The test code is as below:

import mpi4py


comm = mpi4py.MPI.COMM_WORLD
rank = comm.Get_rank()
print('My rank is ',rank)

Based on my google search I have installed MS-MPI latest version (v10) and included the Bin folder in the PATH in environmental variables. That is not resolving the issue. I am running the program in Spyder IDE.

mpi4py Version 3.0.3.

edited Mar 22 '20 at 23:47

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asked Mar 22 '20 at 09:28

2

fwiw, the `mpi4py` doc uses the following syntax `from mpi4py import MPI` and then `comm=MPI.COMM_WORLD` – Gilles Gouaillardet Mar 22 '20 at 10:21
Gilles Gouaillardet's comment solved the issue. – Mar 22 '20 at 10:56
1

This is just how Python imports work. Importing a package does not automatically import all of its sub packages. – Jonathon Reinhart Mar 22 '20 at 23:54

Module 'mpi4py' has no attribute 'MPI'

0 Answers0