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import os
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from flask import Flask
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app = Flask(__name__)
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@app.route('/')
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def hello_world():
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target = os.environ.get('TARGET', 'World')
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return 'Hello {}!\n'.format(target)
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if __name__ == "__main__":
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app.run(debug=True,host='0.0.0.0',port=int(os.environ.get('PORT', 8080)))
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