REGISTER NOW: Brightway Spring School! 🇨🇦 Québec City (Canada) 🗓️ 20.-24. May 2024

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#

exceptionException

Exception to raise.

Initialize self. See help(type(self)) for accurate signature.

exception bw2io.chemidplus.Multiple[source]#

Bases: Exception

Inheritance diagram of bw2io.chemidplus.Multiple

Multiple results for given search query.

Parameters#

exceptionException

Exception to raise.

Initialize self. See help(type(self)) for accurate signature.

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.

Attributes#

api_cachedict

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

master_mappingdict

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

forbidden_keysset

Identifiers that aren’t unique in the ChemIDPlus system.

Methods#

match(synonym, search=True)

Match a synonym to a master flow.

match_cas(number)

Match a CAS number to a master flow.

process_request(request)

Process a request to the ChemIDPlus API.

load_cache()

Load the cache of API results.

save_cache()

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]#

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

Parameters#

sstr

CAS number.

Returns#

str

Canonical CAS number.

bw2io.chemidplus.DIRPATH[source]#