use io module to save and load poplutation data backups

Author: Kilo59

app/data/geonames_population_mappings.json

@@ -0,0 +1,252 @@
+{
+  "AD": 84000,
+  "AE": 4975593,
+  "AF": 29121286,
+  "AG": 86754,
+  "AI": 13254,
+  "AL": 2986952,
+  "AM": 2968000,
+  "AO": 13068161,
+  "AQ": null,
+  "AR": 41343201,
+  "AS": 57881,
+  "AT": 8205000,
+  "AU": 21515754,
+  "AW": 71566,
+  "AX": 26711,
+  "AZ": 8303512,
+  "BA": 4590000,
+  "BB": 285653,
+  "BD": 156118464,
+  "BE": 10403000,
+  "BF": 16241811,
+  "BG": 7000039,
+  "BH": 738004,
+  "BI": 9863117,
+  "BJ": 9056010,
+  "BL": 8450,
+  "BM": 65365,
+  "BN": 395027,
+  "BO": 9947418,
+  "BQ": 18012,
+  "BR": 201103330,
+  "BS": 301790,
+  "BT": 699847,
+  "BV": null,
+  "BW": 2029307,
+  "BY": 9685000,
+  "BZ": 314522,
+  "CA": 33679000,
+  "CC": 628,
+  "CD": 70916439,
+  "CF": 4844927,
+  "CG": 3039126,
+  "CH": 8484100,
+  "CI": 21058798,
+  "CK": 21388,
+  "CL": 16746491,
+  "CM": 19294149,
+  "CN": 1330044000,
+  "CO": 47790000,
+  "CR": 4516220,
+  "CU": 11423000,
+  "CV": 508659,
+  "CW": 141766,
+  "CX": 1500,
+  "CY": 1102677,
+  "CZ": 10476000,
+  "DE": 81802257,
+  "DJ": 740528,
+  "DK": 5484000,
+  "DM": 72813,
+  "DO": 9823821,
+  "DZ": 34586184,
+  "EC": 14790608,
+  "EE": 1291170,
+  "EG": 80471869,
+  "EH": 273008,
+  "ER": 5792984,
+  "ES": 46505963,
+  "ET": 88013491,
+  "FI": 5244000,
+  "FJ": 875983,
+  "FK": 2638,
+  "FM": 107708,
+  "FO": 48228,
+  "FR": 64768389,
+  "GA": 1545255,
+  "GB": 62348447,
+  "GD": 107818,
+  "GE": 4630000,
+  "GF": 195506,
+  "GG": 65228,
+  "GH": 24339838,
+  "GI": 27884,
+  "GL": 56375,
+  "GM": 1593256,
+  "GN": 10324025,
+  "GP": 443000,
+  "GQ": 1014999,
+  "GR": 11000000,
+  "GS": 30,
+  "GT": 13550440,
+  "GU": 159358,
+  "GW": 1565126,
+  "GY": 748486,
+  "HK": 6898686,
+  "HM": null,
+  "HN": 7989415,
+  "HR": 4284889,
+  "HT": 9648924,
+  "HU": 9982000,
+  "ID": 242968342,
+  "IE": 4622917,
+  "IL": 7353985,
+  "IM": 75049,
+  "IN": 1173108018,
+  "IO": 4000,
+  "IQ": 29671605,
+  "IR": 76923300,
+  "IS": 308910,
+  "IT": 60340328,
+  "JE": 90812,
+  "JM": 2847232,
+  "JO": 6407085,
+  "JP": 127288000,
+  "KE": 40046566,
+  "KG": 5776500,
+  "KH": 14453680,
+  "KI": 92533,
+  "KM": 773407,
+  "KN": 51134,
+  "KP": 22912177,
+  "KR": 48422644,
+  "KW": 2789132,
+  "KY": 44270,
+  "KZ": 15340000,
+  "LA": 6368162,
+  "LB": 4125247,
+  "LC": 160922,
+  "LI": 35000,
+  "LK": 21513990,
+  "LR": 3685076,
+  "LS": 1919552,
+  "LT": 2944459,
+  "LU": 497538,
+  "LV": 2217969,
+  "LY": 6461454,
+  "MA": 33848242,
+  "MC": 32965,
+  "MD": 4324000,
+  "ME": 666730,
+  "MF": 35925,
+  "MG": 21281844,
+  "MH": 65859,
+  "MK": 2062294,
+  "ML": 13796354,
+  "MM": 53414374,
+  "MN": 3086918,
+  "MO": 449198,
+  "MP": 53883,
+  "MQ": 432900,
+  "MR": 3205060,
+  "MS": 9341,
+  "MT": 403000,
+  "MU": 1294104,
+  "MV": 395650,
+  "MW": 17563749,
+  "MX": 112468855,
+  "MY": 28274729,
+  "MZ": 22061451,
+  "NA": 2128471,
+  "NC": 216494,
+  "NE": 15878271,
+  "NF": 1828,
+  "NG": 154000000,
+  "NI": 5995928,
+  "NL": 16645000,
+  "NO": 5009150,
+  "NP": 28951852,
+  "NR": 10065,
+  "NU": 2166,
+  "NZ": 4252277,
+  "OM": 2967717,
+  "PA": 3410676,
+  "PE": 29907003,
+  "PF": 270485,
+  "PG": 6064515,
+  "PH": 99900177,
+  "PK": 184404791,
+  "PL": 38500000,
+  "PM": 7012,
+  "PN": 46,
+  "PR": 3916632,
+  "PS": 3800000,
+  "PT": 10676000,
+  "PW": 19907,
+  "PY": 6375830,
+  "QA": 840926,
+  "RE": 776948,
+  "RO": 21959278,
+  "RS": 7344847,
+  "RU": 140702000,
+  "RW": 11055976,
+  "SA": 25731776,
+  "SB": 559198,
+  "SC": 88340,
+  "SD": 35000000,
+  "SE": 9828655,
+  "SG": 4701069,
+  "SH": 7460,
+  "SI": 2007000,
+  "SJ": 2550,
+  "SK": 5455000,
+  "SL": 5245695,
+  "SM": 31477,
+  "SN": 12323252,
+  "SO": 10112453,
+  "SR": 492829,
+  "SS": 8260490,
+  "ST": 197700,
+  "SV": 6052064,
+  "SX": 37429,
+  "SY": 22198110,
+  "SZ": 1354051,
+  "TC": 20556,
+  "TD": 10543464,
+  "TF": 140,
+  "TG": 6587239,
+  "TH": 67089500,
+  "TJ": 7487489,
+  "TK": 1466,
+  "TL": 1154625,
+  "TM": 4940916,
+  "TN": 10589025,
+  "TO": 122580,
+  "TR": 77804122,
+  "TT": 1328019,
+  "TV": 10472,
+  "TW": 22894384,
+  "TZ": 41892895,
+  "UA": 45415596,
+  "UG": 33398682,
+  "UM": null,
+  "US": 310232863,
+  "UY": 3477000,
+  "UZ": 27865738,
+  "VA": 921,
+  "VC": 104217,
+  "VE": 27223228,
+  "VG": 21730,
+  "VI": 108708,
+  "VN": 89571130,
+  "VU": 221552,
+  "WF": 16025,
+  "WS": 192001,
+  "XK": 1800000,
+  "YE": 23495361,
+  "YT": 159042,
+  "ZA": 49000000,
+  "ZM": 13460305,
+  "ZW": 13061000
+}

app/utils/populations.py

@@ -1,9 +1,13 @@
 """app.utils.populations.py"""
+import json
 import logging
 
 import requests
 
+import app.io
+
 LOGGER = logging.getLogger(__name__)
+GEONAMES_BACKUP_PATH = "geonames_population_mappings.json"
 
 # Fetching of the populations.
 def fetch_populations():
@@ -20,12 +24,20 @@ def fetch_populations():
     mappings = {}
 
     # Fetch the countries.
-    countries = requests.get("http://api.geonames.org/countryInfoJSON?username=dperic").json()["geonames"]
-
-    # Go through all the countries and perform the mapping.
-    for country in countries:
-        mappings.update({country["countryCode"]: int(country["population"]) or None})
-
+    try:
+        countries = requests.get(
+            "http://api.geonames.org/countryInfoJSON", params={"username": "dperic"}, timeout=2
+        ).json()["geonames"]
+        # Go through all the countries and perform the mapping.
+        for country in countries:
+            mappings.update({country["countryCode"]: int(country["population"]) or None})
+
+        if mappings:
+            app.io.save(GEONAMES_BACKUP_PATH, mappings)
+    except (json.JSONDecodeError, KeyError, requests.exceptions.Timeout) as err:
+        LOGGER.warning(f"Error pulling population data. {err.__class__.__name__}: {err}")
+        mappings = app.io.load(GEONAMES_BACKUP_PATH)
+        LOGGER.info(f"Using backup data from {GEONAMES_BACKUP_PATH}")
     # Finally, return the mappings.
     return mappings