import os from flask import Flask app = Flask(__name__) @app.route('/') def isprime(): num = os.environ.get('TARGET', '107107') if num > 1: # check for factors for i in range(2, num): if (num % i) == 0: return "not prime" else: return "not prime" else: print(num, "is not a prime number") if __name__ == "__main__": app.run(debug=True, host='0.0.0.0', port=int(os.environ.get('PORT', 8080)))