change matrix shape dataframe to tabular dataframe

Question

I need to change below dataframe:

I want the output in below form:

I tried to use itertools.combinations_with_replacement to get all combination

from itertools import combinations_with_replacement comb = list(combinations_with_replacement(pairwise_similarity_df.index,2))

matrix is 10000*10000 so i expected 100000000 rows but got only 50005000.

how can i convert this to required format?

Does this answer your question? [pandas convert some columns into rows](https://stackoverflow.com/questions/28654047/pandas-convert-some-columns-into-rows) — gionni, Mar 04 '21 at 07:21

score 0 · Accepted Answer · answered Mar 04 '21 at 09:51

0

Thanks Gionni,

Below code worked for me:

df['company1']=df.index

df=df.melt(id_vars["company1"],var_name="company2")

answered Mar 04 '21 at 09:51

pc94

1 Answers1