How do I melt a pandas dataframe?
On the pandas tag, I often see users asking questions about melting dataframes in pandas. I am gonna attempt a cannonical Q&A (self-answer) with this topic.
melt
Pandas DataFrame stack multiple column values into single column
Assuming the following DataFrame:
Opposite of melt in python pandas
I cannot figure out how to do “reverse melt” using Pandas in python.
This is my starting data