Removing duplicate list items

[eglaud]

For example,

Paste excel data: blacknose dace
Blacknose dace

returns

[Blacknose dace
Blacknose dace]

and

Paste excel data: blacknose dace, Blacknose dace, blacknose dace blacknose dace
Blacknose dace

returns

[ Blacknose dace,  Blacknose dace Blacknose dace
Blacknose dace, Blacknose dace]

I would like all of these to just return "Blacknose dace"

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Thanks Craig! I read all of this and realize that my problems would be moot if I just follow the code how I wrote it, and JUST paste one section of excel data. I have a few questions, however.

You don't need OrderedDict. You sort the result after making a list of it, so you lose any order stored in OrderedDict. So you can just use set to remove the duplicates.

Finally, you are using version 2.7. You need to upgrade to the latest version. End of life for 2.7 is in 42 days.

The ordereddict isn't the best option, but it does seemingly remove my duplicates (when this is used properly), but I'm unsure how to use set? I tried that but it splits all my words into letters? I get the desire to code efficiently, but it does seem to work.

As for the 2.7, I have no idea how you could tell, but will my code not work in the latest version? I'm using my work's IDLE program.