import subprocess

def run_command(command):

    process = subprocess.Popen(command, shell=True,stdout=subprocess.PIPE, stderr=subprocess.PIPE)

    output, error = process.communicate()

    return output.decode(), error.decode()



command = "psql lts_ets_pro -f statement3.spl > event_result.txt"
'''
output, error = run_command(command)

print(output)
if error:
    print(error)'''