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
value-class
sdmx
gnome-shell-extensions
xcode-previews
py7zr
dcast
dagger
sysv-ipc
laravel-charts
git-subtree
ibinspectable
maxmind
wlst
magento2.1
babel-node
grgit
yargs
full-disk-access
apex-trigger
nsbitmapimagerep
o-d-matrix
plpgsql
stepwise-regression
com-port
chez-scheme
import-libraries
keypaths
java-ee-5
haxm
raii
