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Code to generate position of cities randomly for Traveling Salesman Problem
import json
import random
cities = []
nnmax = 50
for nn in range(nnmax):
city = {}
city['id'] = nn
city['x'] = (random.random() - 0.5)*2
city['y'] = (random.random() - 0.5)*2
with open('city_info.json', "w") as file:
json.dump(cities, file, sort_keys=True, indent=2)
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