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@ -1,3 +1,4 @@ |
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import argparse |
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import concurrent.futures |
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import csv |
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import itertools |
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@ -10,12 +11,20 @@ from geopy.distance import geodesic |
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MAX_DISTANCE = 20_037.5 |
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# Add argparse |
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parser = argparse.ArgumentParser() |
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parser.add_argument("-c", "--country", help="Specify the country code", type=str, default="US") |
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parser.add_argument("-w", "--workers", help="Specify the number of workers", type=int, default=1) |
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parser.add_argument("-o", "--output-file", help="Specify the name of the output file (file.csv)", type=str, default="city_distances_full.csv") |
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args = parser.parse_args() |
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gc = geonamescache.GeonamesCache() |
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cities = gc.get_cities() |
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us_cities = { |
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k: c |
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for k, c in cities.items() |
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if (c.get("countrycode") == "US") # & (c.get("population", 0) > 5e4) |
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if (c.get("countrycode") == args.country) # & (c.get("population", 0) > 5e4) |
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} |
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@ -92,13 +101,13 @@ def main(): |
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print(f"Num cities: {len(cities)}") |
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city_combinations = list(itertools.combinations(cities, 2)) |
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with open("city_distances_full.csv", "w", newline="") as csvfile: |
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with open(args.output_file, "w", newline="") as csvfile: |
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fieldnames = ["city_from", "city_to", "distance"] |
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writer = csv.DictWriter(csvfile, fieldnames=fieldnames) |
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writer.writeheader() |
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try: |
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executor = concurrent.futures.ProcessPoolExecutor(max_workers=8) |
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executor = concurrent.futures.ProcessPoolExecutor(max_workers=args.workers) |
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# results = executor.map(calculate_distance, city_combinations) |
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futures = { |
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executor.submit(calculate_distance, pair): pair |
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