Text manipulation of a comma separated string in python

I want to read a textfile test.txt where the txt is in the format

'Jon, Stacy, Simon, ..., Maverick'

I’d want to save the string into test2.txt as

'Jon AS t1_Jon, Stacy AS t1_Stacy, Simon AS t1_Simon, ..., Maverick AS t1_Maverick'

It could be that there is a linebreak every now and then, I would want to ignore that. How would I do it in an efficient and easy way?

PS: I couldn’t come up with a more fitting title, how would you name it?

>Solution :

One nice approach is to use the re module.

import re

s_in = 'apple, banana, orange,\n mango, guava'
words = re.split(r'[,\n]\s*',s_in)
s_out = ', '.join([f'{word} AS t1_{word}' for word in words])
print(s_out)

Result:

apple AS t1_apple, banana AS t1_banana, orange AS t1_orange, mango AS t1_mango, guava AS t1_guava