import requests
import webbrowser

url = 'https://www.avis.com/en/home'

payload = {
    "anguPicLoc":"Chicago Midway Intl Airport, Chicago, Illinois, United States-(MDW)",
    "reservationModel.pickUpDateDisplay":"05/05/2018",
    "reservationModel.dropDateDisplay":"05/06/2018"
}

def main():
    r = requests.post(url, payload)
    with open("requests_results.html","w") as f:
        f.write(r.content)
        webbrowser.open("requests_results.html")
    return 0

if __name__ == '__main__':
    main()