Vector3 in Meep in Python

问题

I'm getting 'module' object has no attribute 'Vector3' error in my simple python code.

This is rightAngle.py file

import meep as mp
import math

cell = mp.Vector3(16, 8, 0)
geometry = [mp.Bloack(mp.Vector3(1e20, 1, 1e20),
                      center = mp.Vector3(0, 0),
                      material = mp.Medium(epsilon = 12))]
sources = [mp.Source(mp.ContinuousSource(frequency = 0.15),
                     component = mp.Ez,
                     center = mp.Vector3(-7, 0))]
pml_layers = [mp.PML(1.0)]
resolution = 10

Compling using:

python rightAngle.py >& rightAngle.out

And getting this output:

Traceback (most recent call last):
  File "rightAngle.py", line 4, in <module>
    cell = mp.Vector3(16, 8, 0)
AttributeError: 'module' object has no attribute 'Vector3'

All I'm doing is copy and pasting given code from this fairly reliable source but getting error in Vector3 object.

Python version:

Python 2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609] on linux2

I don't know what I'm missing?

Meep Documentation: https://meep.readthedocs.io/en/latest/Python_Tutorials/Basics/

回答1:

Got the same problem while trying to use it on Ubuntu 16.04.

What worked for me was installing Anaconda for python 2.7 and create their recommended environment using:

conda create -n mp -c chogan -c defaults -c conda-forge pymeep

No Vector3 problem after that.

来源：https://stackoverflow.com/questions/46867259/vector3-in-meep-in-python