Writing to a file parallely while processing in a loop in python

Question

I have a CSV data of 65K. I need to do some processing for each csv line which generates a string at the end. I have to write/append that string in a file.

Psuedo Code:

for row in csv_data:
   processed_string = ...
   file_pointer.write(processed_string + '\n')

How can I make this write operation run in parallel such that main processing operation does not have to include time taken for writing to file? I tried using batch writing (store n lines and then write them at the same time). But it would be really great if you can suggest me some method that can do this parallely. Thanks!

Edit: There are 65K records in a csv file. I am processing it which generate a string (multiline about 10-12). I have to write it to a file. For 65K records, getting a results with 10-15 lines each. Normally code takes 10 mins to run. But adding this file operations increses time to +2-3 mins. So if I can do it parallely without affecting code execution?

Here is the code part.

for i in range(len(queries)): # 65K runs
    Logs.log_query(i, name, version)

    # processed_results = Some processing ...

    # Final Answer
    s = final_results(name, version, processed_results) # Returns a multiline string
    f.write(s + '\n')

"""
EXAMPLE OUTPUT:
-----------------
[0] NAME: Adobe Acrobat Reader DC | VERSION: 21.005
FAISS RESULTS (with cutoff 0.63)
     id                                               name                         version   eol_date extended_eol_date                   major_version minor_version    score
1486469                            Adobe Acrobat Reader DC                    21.005.20054 07-04-2020        07-07-2020                              21           005 0.966597
 327901                            Adobe Acrobat Reader DC                    21.005.20048 07-04-2020        07-07-2020                              21           005 0.961541
 327904                            Adobe Acrobat Reader DC                    21.007.20095 07-04-2020        07-07-2020                              21           007 0.960825
 327905                            Adobe Acrobat Reader DC                    21.007.20099 07-04-2020        07-07-2020                              21           007 0.960557
 327902                            Adobe Acrobat Reader DC                    21.005.20060 07-04-2020        07-07-2020                              21           005 0.958580
 327900                            Adobe Acrobat Reader DC                    21.001.20145 07-04-2020        07-07-2020                              21           001 0.956085
 327903                            Adobe Acrobat Reader DC                    21.007.20091 07-04-2020        07-07-2020                              21           007 0.954148
1486465                            Adobe Acrobat Reader DC                    20.006.20034 07-04-2020        07-07-2020                              20           006 0.941820
1486459                            Adobe Acrobat Reader DC                    19.012.20035 07-04-2020        07-07-2020                              19           012 0.928502
1486466                            Adobe Acrobat Reader DC                    20.012.20048 07-04-2020        07-07-2020                              20           012 0.928366
1486458                            Adobe Acrobat Reader DC                    19.012.20034 07-04-2020        07-07-2020                              19           012 0.925761
1486461                            Adobe Acrobat Reader DC                    19.021.20047 07-04-2020        07-07-2020                              19           021 0.922519
1486463                            Adobe Acrobat Reader DC                    19.021.20049 07-04-2020        07-07-2020                              19           021 0.919659
1486462                            Adobe Acrobat Reader DC                    19.021.20048 07-04-2020        07-07-2020                              19           021 0.917590
1486464                            Adobe Acrobat Reader DC                    19.021.20061 07-04-2020        07-07-2020                              19           021 0.912260
1486460                            Adobe Acrobat Reader DC                    19.012.20040 07-04-2020        07-07-2020                              19           012 0.909160
1486457                            Adobe Acrobat Reader DC                    15.008.20082 07-04-2020        07-07-2020                              15           008 0.902536
 327899                                   Adobe Acrobat DC                    21.007.20099 07-04-2020        07-07-2020                              21           007 0.895940
1277732                        Acrobat Reader DC (classic)                            2015 07-07-2020                 *                            2015           NaN 0.875471

OPEN SEARCH RESULTS (with cutoff 13)
{ "score": 67.98198, "id": 327901, "name": Adobe Acrobat Reader DC, "version": 21.005.20048, "eol_date": 2020-04-07, "extended_eol_date": 2020-07-07 }
{ "score": 66.63623, "id": 327902, "name": Adobe Acrobat Reader DC, "version": 21.005.20060, "eol_date": 2020-04-07, "extended_eol_date": 2020-07-07 }
{ "score": 65.96028, "id": 1486469, "name": Adobe Acrobat Reader DC, "version": 21.005.20054, "eol_date": 2020-04-07, "extended_eol_date": 2020-07-07 }
FINAL ANSWER [OPENSEARCH]
{ "score": 67.98198, "id": 327901, "name": Adobe Acrobat Reader DC, "version": 21.005.20048, "eol_date": 2020-04-07, "extended_eol_date": 2020-07-07 }
----------------------------------------------------------------------------------------------------

"""