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daemon.py
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daemon.py
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import os
import time
import sys
import platform
from datetime import datetime
"""
Simple daemon
"""
def looper():
"""
Continuously looping function
:return:
"""
while True:
# read possible environment variables
var_1 = os.getenv('VAR_1')
var_2 = os.getenv('VAR_2')
var_3 = os.getenv('VAR_3')
var_4 = os.getenv('VAR_4')
# print environment variables and python info to stdout
print(f"Environment variables: VAR_1: {var_1}, VAR_2: {var_2}, VAR_3: {var_3}, VAR_4: {var_4}")
print(f"python details: {platform.python_version()} now: {datetime.now().strftime('%Y-%m-%dT%H:%M:%S')}")
# sleep for one second
time.sleep(1)
if __name__ == "__main__":
# check python version and exit if it is wrong
if sys.version_info[0] != 3 or sys.version_info[1] < 7:
raise Exception("Must be using Python 3.7.X not {}.{}".format(sys.version_info[0], sys.version_info[1]))
sys.exit(looper())