Statistics on the Python C API¶
Line numbers¶
Number of C API line numbers per Python version:
| Python | Public | CPython | Internal | Total |
|---|---|---|---|---|
| 2.7 | 12686 (100%) | 0 | 0 | 12686 |
| 3.6 | 16011 (100%) | 0 | 0 | 16011 |
| 3.7 | 16517 (96%) | 0 | 705 (4%) | 17222 |
| 3.8 | 13160 (70%) | 3417 (18%) | 2230 (12%) | 18807 |
| 3.9 | 12264 (62%) | 4343 (22%) | 3066 (16%) | 19673 |
| 3.10 | 10305 (52%) | 4513 (23%) | 5092 (26%) | 19910 |
Comands:
- public:
wc -l Include/*.h - cpython:
wc -l Include/cpython/*.h - internal:
wc -l Include/internal/*.h
Symbols¶
Symbols exported with PyAPI_FUNC() and PyAPI_DATA():
| Python | Symbols |
|---|---|
| 2.7 | 1098 |
| 3.6 | 1460 |
| 3.7 | 1547 (+87) |
| 3.8 | 1561 (+14) |
| 3.9 | 1552 (-9) |
| 3.10 | 1495 (-57) |
Command:
grep -E 'PyAPI_(FUNC|DATA)' Include/*.h Include/cpython/*.h|wc -l
Since Python 3.9, Python is now built with -fvisibility=hidden to avoid
exporting symbols which are not explicitly exported.
The make smelly command checks for public symbols of libpython and C
extension which are prefixed by Py or _Py. See
Tools/scripts/smelly.py script.