Renames flags from Flaticon to use ISO 3166-1 alpha 2 codes.

flaticon_to_iso2.py

import os
import sys

from hdx.location.country import Country

# https://www.flaticon.com/packs/rectangular-country-simple-flags?word=flags
FLAG_PATH = 'path/to/flaticon/folder'

excluded = {
    # Non-ISO states with limited recognition
    '162-somaliland',
    '215-northen-cyprus',
    # Non-sovereign states that collide when fuzzy matching
    '109-bonaire',  # BQ Bonaire, Sint Eustatius and Saba
    '166-sint-eustatius',  # BQ Bonaire, Sint Eustatius and Saba
    '168-saba-island',  # BQ Bonaire, Sint Eustatius and Saba
    '112-british-virgin-islands', # VG Virgin Islands (British)
    '188-virgin-islands', # VI Virgin Islands (U.S.)
    # Subnational divisions that collide when fuzzy matching
    '123-british-columbia',  # collides with VG
}

renamed = {}
no_flag = {}
for root, dirs, files in os.walk(FLAG_PATH):
    for file in files:
        source = os.path.join(root, file)
        basename, extension = os.path.splitext(file)
        if basename in excluded or not extension or not basename[:3].isdigit():
            continue

        query = basename[4:].replace('-', ' ')
        iso3 = Country.get_iso3_country_code_fuzzy(query)[0]
        if not iso3:
            no_flag[basename] = query
            continue

        iso2 = Country.get_country_info_from_iso3(iso3)['#country+code+v_iso2']
        destination = os.path.join(root, f'{iso2}{extension}')
        if os.path.exists(destination):
            print(f'{source}: {renamed[destination]} already renamed to {destination}, add to `excluded`?', file=sys.stderr)
            continue

        os.rename(source, destination)
        renamed[destination] = source

for basename, query in no_flag.items():
    print(f'{basename}: no country matching "{query}"', file=sys.stderr)

Thanks! hdx-python-country needs to be installed before running the code. Run the command below to install it.

pip install hdx-python-country