I have 2 datasets from a study. One of them has about 140,000 entries, with each participant's response over the course of the study.
The other has 900 entries, with the key of the participant and their demographics.
I was wondering how I would go about combining these into one dataset, with the demographics appended to each row in new columns in the first dataset matching the participant key.
I am working with python in juypter.
I tried DataFrame.append after making a dictionary of the demographics.
