Python: How to split and re-join first and last item in series of strings

Iceberg_Slim :

I have a Series of strings, the series looks like;

Series
"1, 2, 6, 7, 6"
"1, 3, 7, 9, 9"
"1, 1, 3, 5, 6"
"1, 2, 7, 7, 8"
"1, 4, 6, 8, 9"
"1"

I want to remove all elements apart from the first and last, so the output would look like;

Series
"1, 6"
"1, 9"
"1, 6"
"1, 8"
"1, 9"
"1"

To use Split(), do I need to loop over each element in the series? I've tried this but can't get the output I'm looking for.

a_guest :

You can use split and rsplit to get the various parts:

result = [f"{x.split(',', 1)[0]},{x.rsplit(',', 1)[1]}" if x.find(',') > 0 else x
          for x in strings]

If strings is a pd.Series object then you can convert it back to a series:

result = pd.Series(result, index=strings.index)

Origin http://43.154.161.224:23101/article/api/json?id=297257&siteId=1

Split Strings withsplit Item above freeCodeCamp

JS delete the first and last item in the array

How to split a String into a Stream of Strings?

Python data cleaning - re.split() divides strings

Join pandas series of strings

How to use split() to remove last destination in path?

How do I remove the last " & " in a concatenation of Strings?

Strings and lists of Python series

How to split a string in Python

Python - Django - Add First Last Previous Next

Python gets the first and last day of the previous month

Python the first and last day of the month, etc.

python get first/last day of month

LeetCode ❀ 58. Length of last word/ python split() function

The python String.split () and re.split ()

How Python strings as variable names

How to filter a list of strings in Python

C language re-learning series of strings

JS split() splits strings

How to get First and Last uid of the object in foreach loop?