Sometimes a single line can transform an entire data structure.

{v: k for k, v in {}} represents a Python dictionary comprehension — a concise way to build dictionaries using iterable logic.

In this case, keys and values are reversed, creating a new mapping from an existing one.

Instead of loops and temporary variables, the transformation is expressed directly — clear, compact, and intentional.

Readable. Expressive. Pythonic.

Because in Python, complex transformations often fit in a single line.

Product details

100% organic ring-spun cotton
5.3 oz./yd² (180 g/m²)
Single jersey construction
Medium fit
Set-in sleeves
1 × 1 ribbed collar
Double-needle stitching (sleeves & hem)
Self-fabric neck tape

Certified under GOTS and OCS. OEKO-TEX Standard 100 certified. PETA-Approved Vegan.

Blank product sourced from Bangladesh.

Note: Sizes correspond to a smaller fit in the US market. US customers may prefer ordering one size up.

Made on demand

This product is made especially for you as soon as you place an order, helping reduce overproduction.

Compliance

• Traceability:
- Weaving—Bangladesh
- Dyeing—Bangladesh
- Manufacturing—Bangladesh
• Contains 0% recycled polyester
• Contains 0% dangerous substances

Age restrictions: For adults
EU Warranty: 2 years
Meets EU REACH requirements

In compliance with the General Product Safety Regulation (GPSR), Developers Threads and SINDEN VENTURES LIMITED ensure product safety and EU standards.
Contact: gpsr@sindenventures.com
Address: Markou Evgenikou 11, Limassol, Cyprus

Size guide