Mailman 3 _png error - yt-users

28 Jul 2020


      Hello all,
After installing yt 3.6.0 and matplotlib 3.3.0
on 10.15.6 I'm getting the error below after running
'import yt' regarding matplotlib._png. Any ideas?
Thank you,
Andrew
import yt
   File "/usr/local/lib/python3.8/site-packages/yt/__init__.py", line 
63, in <module>
     from yt.fields.api import \
   File "/usr/local/lib/python3.8/site-packages/yt/fields/api.py", line 
19, in <module>
     from . import angular_momentum
   File 
"/usr/local/lib/python3.8/site-packages/yt/fields/angular_momentum.py", 
line 26, in <module>
     from .vector_operations import \
   File 
"/usr/local/lib/python3.8/site-packages/yt/fields/vector_operations.py", 
line 32, in <module>
     from yt.geometry.geometry_handler import \
   File 
"/usr/local/lib/python3.8/site-packages/yt/geometry/geometry_handler.py", 
line 29, in <module>
     from yt.utilities.parallel_tools.parallel_analysis_interface import \
   File 
"/usr/local/lib/python3.8/site-packages/yt/utilities/parallel_tools/parallel_analysis_interface.py", 
line 30, in <module>
     from yt.data_objects.image_array import ImageArray
   File 
"/usr/local/lib/python3.8/site-packages/yt/data_objects/image_array.py", 
line 18, in <module>
     from yt.visualization.image_writer import write_bitmap, write_image
   File 
"/usr/local/lib/python3.8/site-packages/yt/visualization/image_writer.py", 
line 29, in <module>
     import yt.utilities.png_writer as pw
   File 
"/usr/local/lib/python3.8/site-packages/yt/utilities/png_writer.py", 
line 13, in <module>
     import matplotlib._png as _png