Reddit tally number of comments on a list of threads per user using PRAW [again]

yomc.py

import praw
from collections import defaultdict

discussion_threads = \
["https://www.reddit.com/r/AReadingOfMonteCristo/comments/eiazxw/chapter_1_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ejo9bh/chapter_2_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ekkjuq/chapter_3_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/elk7ti/chapter_4_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/emz5ol/chapter_5_reading_discussion_spoilers_up_to//",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/env31y/chapter_6_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/eq8rj5/chapter_7_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/es3j2m/chapter_8_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/etib50/chapter_9_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/eus1cq/chapter_10_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/eve9v5/chapter_11_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ewx6nh/chapter_12_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ey6by2/chapter_13_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f0jga6/chapter_14_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f2hq1y/chapter_15_reading_discussion_spoilers_up_to/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f4108m/chapter_16_an_italian_scholar_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f61irg/chapter_17_the_abbes_cell_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f7k986/chapter_18_the_treasure_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f8icul/chapter_19_the_third_seizure_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/f9jxu9/chapter_20_the_graveyard_of_the_chateau_dif/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fb32st/chapter_21_the_island_of_tiboulen_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fc363b/chapter_22_the_smugglers_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fd43p2/chapter_23_the_island_of_monte_cristo_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/femrqe/chapter_24_dazzled_reading_discussion_spoilers_up/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fflpju/chapter_25_the_unknown_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fi9ilr/chapter_26_the_post_du_gard_inn_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fkfwzc/chapter_27_caderousses_story_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fm5nk2/chapter_28_the_prison_register_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fog7yt/chapter_29_the_house_of_morrel_son_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fq93q4/chapter_30_the_fifth_of_september_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fsogq8/chapter_31_italy_sinbad_the_sailor_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fui0we/chapter_32_the_waking_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/fww4u3/chapter_33_roman_bandits_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/g08n5b/chapter_34_the_colosseum_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/g3cddb/chapter_35_la_mazzolata_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/g5qqv5/chapter_36_the_carnival_at_rome_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/g8qizq/chapter_37_the_catacombs_of_saint_sebastian/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/g9zcfy/chapter_38_the_compact_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gd1yu1/chapter_39_the_guests_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gg2tjm/chapter_40_breakfast_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ginlvp/chapter_41_the_presentation_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gkifd5/chapter_42_monsieur_bertuccio_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/glqgwf/chapter_43_the_house_at_auteuil_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gotpxz/chapter_44_the_vendetta_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gr8q4m/chapter_45_the_rain_of_blood_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gt3ly1/chapter_46_unlimited_credit_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gvj10r/chapter_47_the_dappled_grays_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gxf2f9/chapter_48_ideology_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/gynve5/chapter_49_hayd%C3%A9e_reading_discussion_spoilers_up/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/h00vnt/chapter_50_the_morrel_family_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/h7v2p9/chapter_51_pyramus_and_thisbe_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hahmex/chapter_52_toxicology_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hc8udn/chapter_53_robert_le_diable_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hdhe5a/chapter_54_a_flurry_in_stocks_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/her3kc/chapter_55_major_cavalcanti_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hgh17p/chapter_56_andrea_cavalcanti_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hhpcq5/chapter_57_in_the_lucerne_patch_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hj0hf2/chapter_58_m_noirtier_de_villefort_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hkrxu8/chapter_59_the_will_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hlx48j/chapter_60_the_telegraph_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hn7tjx/chapter_61_how_a_gardener_may_get_rid_of_the/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hoz67h/chapter_62_ghosts_spoilers_up_to_chapter_62/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hq4x9n/chapter_63_the_dinner_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hrd602/chapter_64_the_beggar_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ht60wy/chapter_65_a_domestic_scene_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hub0z6/chapter_66_marriage_plans_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hvjyiw/chapter_67_at_the_office_of_the_kings_attorney/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hxbrp2/chapter_68_a_summer_ball_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hyhnyp/chapter_69_the_inquiry_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/hzqc5i/chapter_70_the_ball_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/i1hjpf/chapter_71_bread_and_salt_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/i3v1it/chapter_72_madame_de_saintmeran_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/i6u4o4/chapter_73_the_promise_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/i8415i/chapter_74_the_villefort_family_vault_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ia4fls/chapter_75_the_judicial_enquiry_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/icdumv/chapter_76_progress_of_cavalcanti_the_younger/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ife9xc/chapter_77_hayd%C3%A9e_reading_discussion_spoilers_up/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/iihfo1/chapter_78_a_correspondent_writes_from_janina/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ikw1e3/chapter_79_the_lemonade_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/imqajr/chapter_80_the_accusation_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ip899a/chapter_81_the_room_of_the_retired_baker_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ir7cg5/chapter_82_breaking_and_entering_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/is8s7t/chapter_83_the_hand_of_god_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/itl1xx/chapter_84_beauchamp_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/ivphfc/chapter_85_the_journey_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/iy0mbi/chapter_86_the_trial_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/izti59/chapter_87_the_challenge_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/j11nz6/chapter_88_the_insult_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/j2ba8u/chapter_89_a_nocturnal_interview_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/j43puh/chapter_90_the_encounter_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/j59ddz/chapter_91_mother_and_son_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/j6gyq5/chapter_92_the_suicide_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/j89d8k/chapter_93_valentine_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/japmey/chapter_94_maximilians_avowal_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jcix9e/chapter_95_father_and_daughter_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jf3dpz/chapter_96_the_contract_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jgz412/chapter_97_the_departure_for_belgium_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jjdh32/chapter_98_the_bell_and_bottle_tavern_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jl74sg/chapter_99_the_law_reading_discussion_spoilers_up/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jmd0ik/chapter_100_the_apparition_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jnnp0d/chapter_101_locusta_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jpe44b/chapter_102_valentine_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jqmnxv/chapter_103_maximilien_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jrwvni/chapter_104_danglars_signature_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jtrtaf/chapter_105_the_cemetery_of_perelachaise_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jw5gip/chapter_106_dividing_the_proceeds_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jxzs5o/chapter_107_the_lions_den_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/jz6lh8/chapter_108_the_judge_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/k0pmyx/chapter_109_the_assizes_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/k2bnzv/chapter_110_the_indictment_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/k3kgc9/chapter_111_expiation_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/k6vxxo/chapter_112_the_departure_reading_discussion/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/k9gc03/chapter_113_the_past_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/kbdjj8/chapter_114_peppino_reading_discussion_spoilers/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/kcm1im/chapter_115_luigi_vampas_bill_of_fare_reading/",
"https://www.reddit.com/r/AReadingOfMonteCristo/comments/kdxsae/chapter_116_the_pardon_reading_discussion/"]

reddit = praw.Reddit(client_id='PLACEHOLDER CLIENT ID',
                     client_secret='PLACEHOLDER CLIENT SECRET',
                     user_agent='PLACEHOLDER USER AGENT')

yolm = reddit.subreddit('AReadingOfMonteCristo')

tally = defaultdict(int)

for url in discussion_threads:
    submission = reddit.submission(url=url)
    comments = submission.comments.list()
    for comment in comments:
        author = comment.author.name if comment.author else "[deleted]"
        tally[author] += 1

# output
print("Total participants: ", len(tally))
for index, k in enumerate(sorted(tally, key=tally.get, reverse=True)):
    print(index + 1, ':', k, tally[k])

I do not want to edit for posterity, but there is a problem with this script in the case of threads with a lot of comments; you will encounter MoreComments objects.

https://praw.readthedocs.io/en/latest/tutorials/comments.html

In order to deal with them you can add this before line 132:

submission.comments.replace_more(limit=None)

Also line 126 is completely unnecessary. Sorry about that.