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Basically, I have a tabular file with 4 columns (A,B,C,D). and several rows (1,2,3,4,5,6,7,....)
Considering column A the data are redundant (like :
A B C ...

Hello all,
I need to filter a dataframe composed of several columns of data to remove the duplicates according to one of the columns. I did it with pandas. In the main time, I need that the last...

sorry maybe I was not so clear but like that doesn't work in the whole big file correctly.

for each line with * I need to add nr=the number of lines belonging to that group(group=cluster)

so...

I need to filter a file that is composed like that:
>Cluster 0
0 292nt, >last294258;size=1;... *
>Cluster 1
0 292nt, >last111510;size=1;... *
1 290nt, >last136280;size=1;... at -/98.62%...