As we all know, filenames in Windows can't contain colons. However, I ran into a problem, that can be reproduced with the following sample code: import os os.c
nvml
urlslug
configuration-management
business-process
nested-function
laravel-sitemap
chef-infra
perfetto
kcachegrind
filter-bank
azure-postgresql
lxml.objectify
wicket
hsv
cab
private-key
xcache
iis-manager
androidhttpclient
shopify-api
pcap-ng
authorize
cakephp-3.0
node-gcm
negate
apt
event-id
demandware
mscoco
fiddler