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Channel

Библиотека задач по Python | тесты, код, задания

@py_problems_lib

On this record: Topic · Observations · Channels linked by matching posts · Growth · Engagement · Reactions · Posts · Citations · Telegram's recommendations · Cite this entry

6,334subscribers

-116 since we began measuring on 6 August 2026

Risers and fallers across the register · movement among entries of 3,162–10,000.

Register entry

Telegram ID-1001906153670
TypeChannel
Username@py_problems_lib
CreatedBetween 1 March 2023 and 31 December 2023 — estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded6 August 2026
Last confirmed live7 November 2026
Measurements held26
Confirmed unchanged1 time, most recently 7 November 2026
On Telegramt.me/py_problems_lib

Topic

Education — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-UD-Q6_K_XL, prompt version 1) read this channel’s own recent posts on 11 August 2026 and assigned it the closest of 31 fixed categories, at 99% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and the other topics.

Observations

These are measurements, not verdicts. Each one below states something we counted, alongside the evidence it was counted from, so you can check it rather than take it. None of them is graded: every observation this register holds is recorded at severity 0, because the precision of the detectors behind them has not been measured yet, and a rating we cannot support is worse than none. Read each as a fact about the data, not as a judgement about the channel. How we measure.

Content that also appears on other registered channels

Posts published here appear in near-verbatim form on 1 other registered channel. This entry also forms a group of 2 channels linked by matching posts. The matching is on the text itself, not on Telegram’s forward marker, so it finds a copy whether or not it was labelled as one.

Matching posts — open both and compare (6 of the pairs behind the counts below)
Posted firstThenOverlapGap
@py_problems_lib/1717 · this entry20 Jul 2026, 20:24 UTC@py_quiz/183720 Jul 2026, 20:53 UTC1.0029 minutes
@py_problems_lib/1719 · this entry22 Jul 2026, 19:25 UTC@py_quiz/183822 Jul 2026, 20:05 UTC1.0040 minutes
@py_problems_lib/1722 · this entry25 Jul 2026, 20:44 UTC@py_quiz/184025 Jul 2026, 20:48 UTC1.004 minutes
@py_problems_lib/1723 · this entry27 Jul 2026, 20:03 UTC@py_quiz/184127 Jul 2026, 21:01 UTC1.0058 minutes
@py_problems_lib/1726 · this entry29 Jul 2026, 19:45 UTC@py_quiz/184329 Jul 2026, 20:13 UTC1.0028 minutes
@py_problems_lib/1729 · this entry30 Jul 2026, 20:43 UTC@py_quiz/184530 Jul 2026, 20:47 UTC1.003 minutes
Channels this entry shares post bodies with, where at least one matching post pair has no forward credit between the two channels, or to a common source, recorded in our data
ChannelMatching postsText overlapTypical gapPublished first
@py_quiz7 (7/7 hand-verifiable sample passed)1.0028 minutesthis entry (7–0)

Text overlap is the Jaccard coefficient over the set of distinct three-word phrases in the two bodies: 1.00 is identical wording, and the threshold for counting a pair at all is 0.70. Candidates are generated by simhash LSH (4 x 16-bit bands, exact Hamming <= 3) verified against the bodies with Jaccard over the SET of distinct 3-word shingles. Published first counts which side of each matching pair carries the earlier timestamp — in this corpus, which is the limitation directly below.

What this cannot establish

MEASURED, DOMINANT ERROR SOURCE: a post ingested before 2026-08-06 may have carried a forward header that was not recorded. A 45-pair hand-check against live t.me pages found 14 (31%) where the live page shows a forward header naming the other channel and the database has none, plus 4 more (9%) naming a third party. The text match itself was wrong 0 times out of 45. Read attribution_capture.items_in_trusted_window before treating the unattributed count as a claim.

Telegram lets a channel forward a post with a header naming the source, and we only began reliably recording that header on 2026-08-06. None of the 0 matches recorded here fall after that date, so for this entry we cannot say whether any of them carried a credit. The duplication is measured; the absence of attribution is not.

“Published first” means first in this corpus. We hold 40 comparable posts for this entry, running 15 July 2026 to 6 November 2026. A channel we have read one page deep will look younger than a neighbour we have read in full, and the order would flip with no change in the underlying facts.

The detector’s own notes on this observation, as it recorded them. Names in this_style are fields of the underlying evidence record, which the plain-English paragraphs above read out for this entry.

  • Verbatim republication has three causes and the text separates only two: a clone/mirror, unattributed copy-paste, or BOTH channels copying a common third source that neither attributes. The spread filter (content held by at most 8 channels) reduces the third and does not remove it.
  • 'Earliest' means earliest IN THIS CORPUS. A channel ingested one page deep will look younger than a neighbour ingested in full; corpus_coverage above is there to be checked before the direction is believed.
  • shared_verified_est extrapolates the sampled pass rate over the full narrow match count; sampled/passed are the numbers actually measured.
  • Absence of a forward header is not proof of intent: Telegram lets a channel disable forward attribution, and a credit written in the body is not parsed as attribution here (mention_edge_either_way above is the closest available signal).

Of the group of 2 channels, the one whose matching posts we hold earliest is @py_problems_lib — which is this entry. That is a statement about our reading window, not a claim of authorship.

Recorded under the key clone_source, last confirmed 11 November 2026. An observation that a later pass no longer finds is cleared, and a cleared observation is removed from this page rather than being shown struck through — we do not keep publishing a claim we have withdrawn. Dispute an observation.

Channels linked by matching posts

This channel is in a group of 2 registered channels linked by matching posts. Links are found by comparing text fingerprints across every channel on the register.

Which channel, if either, published first is deliberately not shown in this list. “First” could only mean first in our own crawl, which depends on how deep we happened to reach into each channel’s history, not on when the content was actually first posted. Our one hand-check read 45 of the highest-confidence flagged pairs against the live Telegram pages. In 18 of them the live page showed a “Forwarded from” credit that our database had no record of, so reading that pair as an unattributed copy was wrong; the check did not measure who published first. This list is ordered by subscriber count, the same as every other listing on this site, never by which channel we think came first. Near-verbatim matching has several ordinary explanations besides copying — a channel mirroring itself, an unattributed repost, or two channels independently repeating the same wire story — and this measurement cannot tell those apart. How this is measured.

Growth

6,3296,4546,391.56 August 2026 — 6,450 subscribers6 August 2026 — 6,450 subscribers7 August 2026 — 6,452 subscribers10 August 2026 — 6,454 subscribers13 August 2026 — 6,450 subscribers16 August 2026 — 6,445 subscribers20 August 2026 — 6,442 subscribers24 August 2026 — 6,435 subscribers27 August 2026 — 6,423 subscribers30 August 2026 — 6,420 subscribers2 September 2026 — 6,407 subscribers7 September 2026 — 6,401 subscribers12 September 2026 — 6,393 subscribers16 September 2026 — 6,386 subscribers28 September 2026 — 6,381 subscribers6 October 2026 — 6,367 subscribers12 October 2026 — 6,365 subscribers15 October 2026 — 6,355 subscribers18 October 2026 — 6,352 subscribers21 October 2026 — 6,346 subscribers23 October 2026 — 6,342 subscribers26 October 2026 — 6,339 subscribers29 October 2026 — 6,333 subscribers1 November 2026 — 6,334 subscribers4 November 2026 — 6,329 subscribers7 November 2026 — 6,334 subscribers6,3346 August 20267 November 2026
26 measurements spanning 93 days, net -116. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 6,310–6,473 and does not start at zero.
Measurement log — every subscribers count we have recorded, most recent 20 of 26
Measured (UTC)SubscribersChange
7 Nov 2026, 12:416,334+5
4 Nov 2026, 14:056,329-5
1 Nov 2026, 11:106,334+1
29 Oct 2026, 11:466,333-6
26 Oct 2026, 19:116,339-3
23 Oct 2026, 15:596,342-4
21 Oct 2026, 01:366,346-6
18 Oct 2026, 04:276,352-3
15 Oct 2026, 13:556,355-10
12 Oct 2026, 22:046,365-2
6 Oct 2026, 02:026,367-14
28 Sept 2026, 21:596,381-5
16 Sept 2026, 02:376,386-7
12 Sept 2026, 02:016,393-8
7 Sept 2026, 10:156,401-6
2 Sept 2026, 13:446,407-13
30 Aug 2026, 12:166,420-3
27 Aug 2026, 08:266,423-12
24 Aug 2026, 01:536,435-7
20 Aug 2026, 04:026,442first reading

Engagement

43 posts held, back to 15 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 14 pages of Telegram’s post history, 20 posts per page.

ERR · 30 days
5.11%
avg views ÷ 6,334 subscribers
Avg views / post
324
22 posts measured
Reaction rate
0.67%
reactions ÷ views · ER floor
Posts in window
22
of 43 held

ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.

ER is defined industry-wide as (forwards + reactions + comments) ÷ views — note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate. It is computed over the 15 of 22 measured posts that carry a reaction reading, and over those same posts' views.

What these figures were computed from
WindowRolling 30 days · latest post in window 6 November 2026
Posts held43 (15 July 2026 – 6 November 2026)
Views total7,120
Reactions total32
Forwards / commentsnot exposed by the public surface — not measured, not estimated
Readings taken6 Nov 2026, 13:41 UTC

Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.

Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.

Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.

Reaction mix

88 reactions across 25 posts, in 8 distinct kinds. The most used accounts for 54.5% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
👍4854.5%
👾1415.9%
🥰1314.8%
⚡55.68%
❤44.55%
😁22.27%
🎉11.14%
🤔11.14%

No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.

Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.

Coverage. Reactions were read on 26 of the 43 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 88 reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.

Measured over the 43 most recent posts we hold, published 15 July 2026 to 6 November 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.

Recent posts

Telegram’s own ‘edited’ marker: 0 of 22 posts held from the last 30 days (0%) carried it when this register last read them. The marker says a post was changed after publishing, not what it said before — this register holds the earlier wording only where an edit fell between two of its own reads (see the edit ledger and how it is measured).

6 Nov 2026, 09:05 UTC90 views2 reactionsread 6 November 2026

👀 Какие элементы останутся в ограниченном deque после extendleft? Python 3.13. Что выведет код? from collections import deque items = deque([1, 2], maxlen=3) items.extendleft([3, 4]) print(list(items)) 👾 — [3, 4, 1] 👍 — [1, 3, 4] 🥰 — [4, 3, 1] ⚡️ — [4, 1, 2] Ответ: 🥰 — [4, 3, 1]. extendleft последовательно добавляет каждый элемент слева. Сначала получается [3, 1, 2], затем [4, 3, 1, 2]. Длина ограничена тремя…

👍2

5 Nov 2026, 09:00 UTC169 views2 reactionsread 6 November 2026

👀 Исчезнет ли ключ Counter, если его счётчик обнулить? Python 3.13. Что выведет код? from collections import Counter counts = Counter("aab") counts["a"] = 0 print("a" in counts) print(list(counts.elements())) 👾 — False, затем ['b'] 👍 — True, затем ['b'] 🥰 — True, затем ['a', 'b'] ⚡️ — False, затем ['a', 'a', 'b'] Ответ: 👍 — True, затем ['b']. Нулевой счётчик сохраняет ключ в Counter. Удалить его можно через de…

👍2

4 Nov 2026, 12:02 UTC211 views1 reactionsread 6 November 2026

❓ Увидит ли итератор элемент, добавленный после его создания? Python 3.13. Что выведет код? values = [1, 2] iterator = iter(values) print(next(iterator)) values.append(3) print(list(iterator)) 👾 — 1, затем [2, 3] 👍 — 1, затем [2] 🥰 — 1, затем [1, 2, 3] ⚡️ — RuntimeError Ответ: 👾 — 1, затем [2, 3]. Итератор списка не сохраняет снимок его содержимого. Он хранит текущую позицию и читает элементы исходного списка…

👾1

3 Nov 2026, 12:04 UTC221 viewsread 6 November 2026

❓ Сколько раз вызовется функция в цепочке сравнений? Python 3.13. Что выведет код? def middle(): print("call") return 5 print(0 < middle() < 10) 👾 — Только True 👍 — call, call, затем True 🥰 — call, затем False ⚡️ — call, затем True Ответ: ⚡️ — call, затем True. Цепочка сравнений вычисляет среднее выражение один раз. Полученное число используется в обеих проверках: 0 < 5 и 5 < 10. Поэтому строка call поя…

2 Nov 2026, 12:04 UTC233 viewsread 6 November 2026

❓ Увидит ли списковое включение переменную из тела класса? Python 3.13. Глобальная переменная number не определена. Что выведет код? try: class Example: number = 3 values = [number for _ in range(2)] print(Example.values) except NameError: print("NameError") 👾 — [3, 3] 👍 — [] 🥰 — NameError ⚡️ — SyntaxError Ответ: 🥰 — NameError. У спискового включения отдельная область видимости. Имен…

1 Nov 2026, 12:01 UTC268 viewsread 6 November 2026

❓ Станет ли пустой итератор ложным? Python 3.13. Что выведет код? values = [] iterator = iter(values) print(bool(values), bool(iterator)) list(iterator) print(bool(iterator)) 👾 — False False, затем False 👍 — False True, затем True 🥰 — False True, затем False ⚡️ — True True, затем True Ответ: 👍 — False True, затем True. Пустой список считается ложным, потому что его длина равна нулю. У итератора списка нет про…

31 Oct 2026, 12:04 UTC255 views1 reactionsread 6 November 2026

❓ Можно ли подменить property записью в __dict__? Python 3.13. Что выведет код? class User: @property def name(self): return "Ann" user = User() user.__dict__["name"] = "Bob" print(user.name) print(user.__dict__["name"]) 👾 — Ann, затем Bob 👍 — Bob, затем Bob 🥰 — Ann, затем Ann ⚡️ — AttributeError Ответ: 👾 — Ann, затем Bob. Объект property — дескриптор данных. При чтении атрибута он имеет приори…

👾1

30 Oct 2026, 12:04 UTC287 views2 reactionsread 6 November 2026

❓ Что останется в переменной после except? Python 3.13. Что выведет код? error = "before" try: raise ValueError("failed") except ValueError as error: print(type(error).__name__) try: print(error) except NameError: print("NameError") 👾 — ValueError, затем before 👍 — ValueError, затем failed 🥰 — Только ValueError ⚡️ — ValueError, затем NameError Ответ: ⚡️ — ValueError, затем NameError. При выходе…

⚡2

29 Oct 2026, 12:02 UTC290 views1 reactionsread 6 November 2026

❓ Вызовется ли фабрика для setdefault, если ключ уже есть? Python 3.13. Что выведет код? def make(): print("factory") return [] groups = {"ann": [1]} result = groups.setdefault("ann", make()) print(result) 👾 — Только [1] 👍 — factory, затем [] 🥰 — factory, затем [1] ⚡️ — Только [] Ответ: 🥰 — factory, затем [1]. Python вычисляет аргументы до вызова метода, поэтому make() выполняется и печатает factory. …

🥰1

28 Oct 2026, 12:01 UTC311 views6 reactionsread 6 November 2026

❓ Сколько ключей создадут True, 1 и 1.0? Python 3.13. Что выведет код? values = {} values[True] = "first" values[1] = "second" values[1.0] = "third" print(len(values), values[True]) 👾 — 3 first 👍 — 1 third 🥰 — 2 third ⚡️ — TypeError Ответ: 👍 — 1 third. Значения True, 1 и 1.0 равны при сравнении и имеют одинаковый хеш. Для словаря это один ключ. Каждая следующая запись заменяет значение предыдущей. Документаци…

👍6

27 Oct 2026, 12:01 UTC336 views2 reactionsread 6 November 2026

❓ В каком порядке окажутся записи с одинаковым ключом сортировки? Python 3.13. Что выведет код? players = [ ("Zoe", 10), ("Ann", 5), ("Bob", 10), ] ordered = sorted(players, key=lambda p: p[1]) print(" ".join(name for name, score in ordered)) 👾 — Ann Zoe Bob 👍 — Ann Bob Zoe 🥰 — Zoe Bob Ann ⚡️ — Zoe Ann Bob Ответ: 👾 — Ann Zoe Bob. sorted сортирует только по ключу p[1], то есть по баллам. Сортировка …

❤1👾1

26 Oct 2026, 12:03 UTC341 views2 reactionsread 6 November 2026

❓ Может ли finally изменить возвращаемый список? Python 3.13. Что выведет код? def build(): result = [1] try: return result finally: result.append(2) print(build()) 👾 — [1] 👍 — None 🥰 — [1, 2] ⚡️ — Ошибка: после return код не выполняется Ответ: 🥰 — [1, 2]. return выбирает объект, который нужно вернуть, но до фактического выхода из функции выполняется finally. Он изменяет тот же списо…

🥰2

Showing the 12 most recent of 43 posts we hold for @py_problems_lib. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.

Forward network

Republishes

Channels on the register whose posts this channel has forwarded.

Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.

Mentions

Named by 11 registered channels — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.

A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.

Appears in Telegram’s recommendations for other channels

The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.

Библиотека питониста | Python, Django, Flask
@pyproglib · 36,972
Telegram ranks this channel #3 of 84 here — alongside 83 others — read 1 September 2026
Python Developer
@python_tg · 21,216
Telegram ranks this channel #26 of 85 here — alongside 84 others — read 25 September 2026
Поколение Python 🐍
@pygen_ru · 50,348
Telegram ranks this channel #26 of 93 here — alongside 92 others — read 25 August 2026
Python Portal
@PythonPortal · 50,915
Telegram ranks this channel #41 of 80 here — alongside 79 others — read 25 August 2026
Библиотека программиста
@proglibrary · 77,612
Telegram ranks this channel #42 of 82 here — alongside 81 others — read 19 August 2026
Python/ django
@pythonl · 58,287
Telegram ranks this channel #45 of 84 here — alongside 83 others — read 22 August 2026
Учебные фильмы 🎞
@maths_lib · 25,588
Telegram ranks this channel #52 of 67 here — alongside 66 others — read 14 September 2026
Python и 1000 уязвимостей
@osint_pythons · 36,463
Telegram ranks this channel #53 of 84 here — alongside 83 others — read 1 September 2026
Python Hacks
@python_secrets · 40,332
Telegram ranks this channel #57 of 82 here — alongside 81 others — read 30 August 2026
Python вопросы с собеседований
@python_job_interview · 24,906
Telegram ranks this channel #59 of 90 here — alongside 89 others — read 15 September 2026
Давайте про IT 💻
@davaite_pro_it · 24,825
Telegram ranks this channel #63 of 79 here — alongside 78 others — read 2 October 2026

This channel appears in 11 seed channels' Telegram-generated recommendation lists in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.

Cite this entry

A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 7 November 2026 — this entry's latest reading, not the date you are reading this.

“Библиотека задач по Python | тесты, код, задания” (@py_problems_lib), 6,334 subscribers as measured 7 November 2026. Telegram Register, tgregister.com/channel/py_problems_lib.

Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.