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
xsd-1.1
visio-2010
usleep
imagesource
asp.net-mvc-apiexplorer
ios-simulator
aws-elasticsearch
aws-cloudshell
urlsearchparams
guitar
weibull
trusted-web-activity
character-encoding
aws-mediaservices
relevance
unnamed-namespace
listfield
.net-core-3.0
normals
htl
emboss
codelite
pv
uno-platform
shipping
gridworld
centos7
ioptionsmonitor
invisible
angularjs-ng-transclude
