
Dear Kwant developer, I am trying to install kwant 1.3 on window 10. The installation went smoothly without warning. I encounter problems when I try to run the ab ring example with the following error messages. There was no warning about the installation of matplotlib during the installation. I ran pip list and can see matplotlib. KS Chan Warning (from warnings module): File "C:\Users\KSCHAN\AppData\Local\Programs\Python\Python36\lib\site-packages\kwant\plotter.py", line 49 "functions will work.", RuntimeWarning) RuntimeWarning: matplotlib is not available, only iterator-providing functions will work. Traceback (most recent call last): File "C:\Users\KSCHAN\Desktop\ab_ring.py", line 21, in <module> from matplotlib import pyplot File "C:\Users\KSCHAN\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\__init__.py", line 124, in <module> from matplotlib.rcsetup import (defaultParams, File "C:\Users\KSCHAN\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\rcsetup.py", line 32, in <module> from matplotlib.fontconfig_pattern import parse_fontconfig_pattern File "C:\Users\KSCHAN\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\fontconfig_pattern.py", line 25, in <module> from pyparsing import Literal, ZeroOrMore, \ ModuleNotFoundError: No module named 'pyparsing' Disclaimer: This email (including any attachments) is for the use of the intended recipient only and may contain confidential information and/or copyright material. If you are not the intended recipient, please notify the sender immediately and delete this email and all copies from your system. Any unauthorized use, disclosure, reproduction, copying, distribution, or other form of unauthorized dissemination of the contents is expressly prohibited.
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Prof. CHAN Kwok Sum