`bw2io.chemidplus`#

Module Contents#

Classes#

ChemIDPlus

Use the ChemIDPlus API to lookup synonyms for chemicals, including pesticides.

Functions#

canonical_cas(s)

CAS numbers have up to ten digits; we remove zero padding and add hyphens where needed.

Attributes#

DIRPATH

exception bw2io.chemidplus.Missing[source]#

Bases: Exception

Inheritance diagram of bw2io.chemidplus.Missing

404 or other error code returned.

Parameters

exception (Exception) – Exception to raise.
signature. (Initialize self. See help(type(self)) for accurate) –

exception bw2io.chemidplus.Multiple[source]#

Bases: Exception

Inheritance diagram of bw2io.chemidplus.Multiple

Multiple results for given search query.

Parameters

exception (Exception) – Exception to raise.
signature. (Initialize self. See help(type(self)) for accurate) –

class bw2io.chemidplus.ChemIDPlus[source]#

Use the ChemIDPlus API to lookup synonyms for chemicals, including pesticides.

Always used to match against a master list. Seeded with names from ecoinvent.

api_cache#

Dictionary with raw data from API, key is canonical name.

Type: dict

master_mapping#

Dictionary from synonyms, including canonical names, to master flows.

Type: dict

forbidden_keys#

Identifiers that aren’t unique in the ChemIDPlus system.

Type: set

match(synonym, search=True)[source]#: Match a synonym to a master flow.

match_cas(number)[source]#: Match a CAS number to a master flow.

process_request(request)[source]#: Process a request to the ChemIDPlus API.

load_cache()[source]#: Load the cache of API results.

save_cache()[source]#: Save the cache of API results.

CAS_TEMPLATE = 'https://chem.nlm.nih.gov/api/data/search?data=complete&exp=rn%2Feq%2F{cas}'[source]#

NAME_TEMPLATE = 'https://chem.nlm.nih.gov/api/data/search?data=complete&exp=na%2Feq%2F{name}'[source]#

add_master_term(term, CAS)[source]#

load_cache()[source]#

match(synonym, search=True)[source]#

match_cas(number)[source]#

process_request(response)[source]#

save_cache()[source]#

bw2io.chemidplus.canonical_cas(s)[source]#