Model/datatypes/epc/domain
Khalim Conn-Kowlessar d164850dd3 S0380.220: map API floor_construction code 0 → None (unknown/N-A)
The 2026 sample's second-largest mapper raise: 37 certs lodge
sap_floor_dimensions.floor_construction=0, which raised UnmappedApiCode
and blocked the cert. Code 0 is the "not recorded / not applicable"
sentinel — 33/37 pair it with floor_heat_loss=6 ("another dwelling
below", an upper-floor flat with no ground floor to describe); the rest
carry mixed Solid / unheated-space descriptions. There is no single
construction to assert.

Map code 0 → None, which defers to RdSAP 10 Table 19 ("where floor
construction is unknown" → age-band default) — identical to how an
unlodged floor_construction (the 993 None certs) is already handled, and
honest about the absence (cf. the no-misleading-insulation_type rule).

Empirically inert and validated: across all 37 code-0 certs the cascade
floor W/K is byte-identical whether code 0 maps to None or to an explicit
"Solid" string — the another-dwelling-below floors compute to 0.0 W/K
(handled via floor_heat_loss + property_type=Flat + floors[].description,
per the _API_FLOOR_HEAT_LOSS_TO_FLOOR_TYPE code-6 note), and the few
genuine ground/unheated floors hit the same age-band default either way.
All 37 now compute (were raising).

Dict value type widened to Optional[str] for the None entry; helper
already returns Optional[str]. §4 suite + schema-mapper tests green
(pre-existing test_total_floor_area failure unrelated); mapper.py pyright
unchanged at 32; new test suppresses reportPrivateUsage (net-zero).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-04 14:37:50 +00:00
..
tests S0380.220: map API floor_construction code 0 → None (unknown/N-A) 2026-06-04 14:37:50 +00:00
__init__.py fix broken imports and rename mapper class 2026-04-13 16:36:13 +00:00
epc.py added ucl corrected peui 2026-05-16 14:39:24 +00:00
epc_codes.csv slice 8a: window physics and orientation aggregates 2026-05-16 15:32:45 +00:00
epc_property_data.py S0380.217: capture wall_insulation_thermal_conductivity (was dropped) 2026-06-04 11:57:00 +00:00
field_mappings.py insulation thickness can be string 🟥 2026-04-15 14:26:09 +00:00
historic_epc.py demo generated for use in address2uprn 2026-05-08 14:48:15 +00:00
historic_epc_matching.py rank address similiarity 2026-05-12 16:02:01 +00:00
mapper.py S0380.220: map API floor_construction code 0 → None (unknown/N-A) 2026-06-04 14:37:50 +00:00