Sending Dataframe from Python to LabVIEW
If you have recent (2019 and up) version of LabVIEW, you can use the Python node, call the python function and get the return values of your function.
Alternately, a message/transport library such as 0MQ can connect between the two languages (assuming two processes running simultaneously).
As for Nathan's answer, LabVIEW has JSON libraries that can parse JSON strings.
I have a 1 by 400 array in Python. I want to send this output in the format of dataframe (df) to LabVIEW. Is LabVIEW able to receive the array as a dataframe (df)?