Python Patterns: Code & Learn

Master the Python pattern-printing questions that keep showing up in real coding
interviews — completely offline, on your phone, at your pace.

Pattern Programs in Python bundles 800+ hand-picked pattern problems (stars,
numbers, alphabets, pyramids, diamonds, hourglasses, hollow shapes, and more),
each with:

• A clear description and hint
• Real Python source with syntax highlighting
• The exact sample output, side-by-side with the code
• Company tags — see which companies have asked each pattern
(Amazon, Google, Infosys, Wipro, TCS, Zoho, and dozens more)

Everything runs offline. There is no login, no server round-trip, no data
collection beyond the ads. Once you install the app, you can practice on a
long flight, on the subway, or in a rural test-prep session with zero bars.


WHY THIS APP

• Interview-focused: every pattern is tagged with the difficulty (Easy /
Medium / Hard) and the companies known to ask it, so you can prioritize
what will actually come up in your interviews.

• Real Python — not pseudocode. The app ships with an embedded Python
interpreter, so you can hit Run on any pattern and see the output
generated on-device. Change the input, tweak the code, and watch the
output update instantly.

• Playground. Write your own Python snippets in a proper editor with line
numbers, undo/redo, and 14 IDE-inspired color themes (Dracula, Monokai,
GitHub, Nord, Tokyo Night, and more). Save snippets, share them, or
export them to a .py file.

• Fill in the Blanks. Turn any pattern into a fill-the-blanks quiz — the
app hides key tokens in the source and you type them back in. Great for
active recall practice, not passive reading.

• Daily Challenge. One curated pattern a day, with a streak counter so
the habit sticks. Miss a day and the streak resets — miss none, and
12-, 30-, 100-day streaks become real.

• Progress you can trust. Mark patterns solved, save favorites, and add
private notes on the ones you always forget. Everything backs up with
your Google account so a new phone doesn't lose your practice history.


CATEGORIES

Stars • Numbers • Alphabets • Triangles • Pyramids • Diamonds • Hollow •
Special (butterfly, hourglass, arrow, plus, and more). 800+ patterns in total.


IDEAL FOR

• CS students preparing for placements (India + international campus
hiring)
• Working developers brushing up before a coding round
• Anyone learning Python who wants small, contained problems to build
loop-and-condition intuition

Ads keep the app free. No paywall, no locked patterns, no "premium" tier.