Pricing

One price per book, paid once

No subscription and no account. Pick a book, pay once, and the PDF is yours to keep. Launch prices are on now.

Prices

The checkout charges the price for the country you buy from: the rupee price in India, the US-dollar price everywhere else (your checkout may show it converted into your own currency). Tax is included in the price.

Launch offer

Think in Patterns

The Python Coding Interview Notebook · Edition 1.1

$29₹699Regular price:$39₹999Save 26%Save 30%₹699 in India

Launch price. The regular price, $39₹999, starts after 31 January 2027.

  • The whole book: one fully linked A4 PDF, 2,288 pages
  • 36 chapter PDFs, each with its own answers
  • One zip download, about 91 MB
  • Corrected 1.x editions free
  • 7-day refund
Buy the PDF · $29₹699Test checkout: no real money

Read 42 pages free · See the book

Every purchase includes

  • Paid once

    One payment. No subscription, no renewals.

  • Yours to keep

    PDF files you download and keep on your own devices. Print them for yourself if you like.

  • Corrections, free

    Corrected editions of the edition you bought (for example 1.x) cost nothing.

  • 7 days to decide

    Write within 7 days of buying for a full refund. Refunds and delivery.

Pricing questions

Why are there two currencies?

Books are priced in US dollars, with a separate rupee price for buyers in India. The toggle shows either; the checkout charges the one for the country you buy from.

Will the price go up?

Yes. The launch price ends on 31 January 2027, and then the regular price applies ($39₹999 for Think in Patterns). Anyone who bought at the launch price keeps their copy and its corrected editions.

Is tax included?

Yes. The price you see is the price you pay; any tax is inside it. Dodo Payments, the merchant of record, works it out for your country and sends the receipt.

How do I pay?

Through Dodo Payments’s secure checkout, which shows the payment methods available in your country. We never see your card or bank details.

Do I pay again for updates?

Not for corrected editions of the edition you bought. They are free.

Something else?