§00 Python OA prep · v1 ships Jan 15, 2027
Daily Python reps for coding interviews,
plus catching the bugs AI writes.
Python drills for the timed online assessments that come before internship interviews.
Short Python drills on the patterns online assessments (OAs) use. v1 is a private GitHub repo: you write your answer, run pytest, and see which tests pass. Recall emails bring each pattern back on days 1, 3, 7, 14 and 30.
Founding members get lifetime access for $15 (it'll be $29 later), until Dec 13, 2026 or 50 spots, whichever comes first.
§01The problem
You grind hundreds of LeetCode problems in September. By the OA in November, half of them are gone.
“400 LeetCode problems, and the timed test still beat me”
1 mark = 10 problems · illustration of the claim above, not measured data
Duck Round is built around coming back to what you've learned: a small set of patterns, short daily rounds, and recall emails on a fixed schedule.
§02What you get
v1, shipping Jan 15, 2027
- Pattern sets×15
Sliding window, two pointers, BFS/DFS, binary search, heaps and more, in Python.
- Timed test sets×2
70-minute sets in the style of HackerRank and CodeSignal OAs.
- "Spot the AI's bug" drills×10
An AI assistant writes the code and you find what's broken.
- Graded with pytestincl.
Every drill ships with test cases. Run pytest on your own computer and see pass or fail.
- Recall emailsincl.
A 15-minute round on one pattern, sent on days 1, 3, 7, 14 and 30.
§03How it works
- 01Get access to the private GitHub repo.
- 02Pick a pattern and do a 15-minute round.
- 03Run pytest to check your answer.
- 04Redo the pattern when its recall email arrives.
§04Pricing
No subscription. Pay once.
Duck Round · founding member
- Lifetime access, all future updates
- incl.
- Vote on the roadmap
- incl.
- Regular price
- $29.00
- Founding discount
- −$14.00
First 50 buyers, until Dec 13, 2026
No subscription · USD · one-time
Refund promise
- Full refund any time before launch, no questions asked.
- Ships Jan 15, 2027. Not delivered by Jan 31, 2027? Every founding member gets an automatic full refund.
- After launch: full refund within 14 days of getting access.
After the founding 50: $29 one-time, lifetime access, no roadmap vote.
Join the waitlist (free)Joining is free. Tick the box and I'll email you the $15 founding offer when spots open.
§05Why "Duck Round"
Rubber-duck debugging: explain it to the duck, find the bug. One round a day.
§06Questions
What exactly do I get?
A private GitHub repo of Python drills. Each drill has test cases; you write your answer and run pytest on your own computer to see what passes. There's no web app in v1. You need Python 3 and a free GitHub account.
Is this another LeetCode clone?
No. It's a small set of patterns you come back to on a fixed schedule, plus drills where you find the bug in AI-written code.
Do I need to know Python?
Basic Python, about one intro course. The drills teach the patterns.
What's an OA?
An online assessment: the timed coding test many companies send before interviews.
When does it ship?
Jan 15, 2027. That leaves months to practice before fall 2027 recruiting.
How do I get access?
When v1 ships, I email you for your GitHub username and invite you to the private repo.
What if it never ships?
If v1 isn't delivered by Jan 31, 2027, I refund every preorder automatically.
Can I get a refund?
Yes: any time before launch, no questions asked, and within 14 days of getting access. Email [email protected].
Who's behind it?
I'm Brandon, a CS student building the drills I wanted for my own internship search.
§07 Save a spot
Your next round starts in January.
Join free and tick the box. When founding spots open, the $15 offer comes to your inbox.