Hello Andres,
We have several Cisco CAT9K series switches (C9200L, C9300) and the code always gives the same error when we try to use the show tech or show interfaces status, C2960 series and C3560 work fine.
python tech2xl.py export.xls show-tech.txt
tech2xl v1.5
Traceback (most recent call last):
File "tech2xl.py", line 422, in
if intinfo[name][item]['Description'] == '':
KeyError: None
show tech.txt
show int status.txt