When you merge two indexed dataframes on certain values using 'outer' merge, python/pandas automatically adds Null (NaN) values to the fields it could not match
azure-text-translation
referential-transparency
libc++
autorest
responsive-design
keda-scaledjob
assembler-warnings
directoryindex
qimagereader
nsmutableattributedstring
asp.net-mvc-2
content-length
aws-kinesis
acsl
sre
audit
pedestal
git-status
symphony-cms
metasploit
django-push-notifications
shared-hosting
pysimplegui
easyimage
knyle-style-sheet
uisearchdisplaycontroller
worldwind
urlsplit
prime-factoring
user-controls
