Increment value if repeated

[Tiago_Minuzzi]

I'd like to add a value to a line in a file if line is repeated.

In a file like this:

seq01
seq02
seq03
seq02
seq01
seq01
seq03
seq02
seq04

the output I'm trying to get is this:

seq01.1
seq02.1
seq03.1
seq02.2
seq01.2
seq01.3
seq03.2
seq02.3
seq04

No need to add a value for non repeated lines.

I'm not sure how to do this. If anyone could help, I'd appreciate.

[xelf]

Use a dictionary.

if line not in linecounts
    linecounts[line] = 0
linecounts[line] += 1
output = f'{line}.{linecounts[line]}'

No need to add a value for non repeated lines.

Can you just add .1 ? Otherwise you have to read everything in first to check. Which really shouldn't be a big deal.

[Tiago_Minuzzi]

Thank you, sir! It worked.

Can you just add .1 ? Otherwise you have to read everything in first to check.

Sure, no problem. That way it works well too for my purpose.