.pyc
1 claimant
0 primary
0 secondary
SWH popularity
Distinct files in the full Software Heritage archive (2026-06-04 export), dated by first appearance, following Desmazières, Di Cosmo, Lorentz (MSR 2025). Case-aggregated. citation.
1.1B
total files
811.4M
first seen 2021–2025 (70.8%)
2022
median year (half its files since)
Case variants in archive: .pyc (1.1B), .PYC (155), .pyC (18), .Pyc (2), .PYc (1) — aggregated above.
Attribution status
This extension is attributed to Python — every claim across all sources (including secondary ones) points to a single language.
Authoritative sources: ✗ Linguist · no claim ✗ Pygments · no claim △ Wikidata · secondary ✗ Wikipedia · no claim
Claimants (1)
Languages that list
.pyc among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Python | wikidata | deprecated |
Wikidata says… (32)
File formats, image formats, audio codecs and other non-PL
entities that claim
.pyc on Wikidata
(property P1195) or in the Wikipedia infobox.
Source: data/derived/external_extension_index.csv.
Click Use as new PL on any row to open the
Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata
URL, and this extension — one submission creates the PL + claim.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| CPython 1.x bytecode Q105866487 file format | file format | — | application/x-python-bytecode | — | Use as new PL ↗ |
| CPython 2.0 bytecode Q105866138 file format | file format | — | application/x-python-bytecode | — | Use as new PL ↗ |
| CPython 2.1 bytecode Q105864435 file format | file format | — | application/x-python-bytecode | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .pyc in our local mirror yet.