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
epub3
httpx
ews-javascript-api
monadplus
multirabbitmq
pgadmin-4
query-string
jsweet
dot-emacs
insertion-sort
linecache
athena
pymodbus
dtype
concourse-pipeline
rum
testrigor
cascade-notation
database-migration
tablelayout
instruction-set
global-methods
issharedsizescope
in-parameters
tabstop
android-clipboardmanager
css-frameworks
url-scheme
oauth-2.1
inverse-transform