Output print statement in python does not goes into cron log

Question

my crontab looks like this:

@reboot sh /home/pi/LCDinterface/shutdownlauncher.sh 2>&1 | tee -a /home/cronlog

Content of shutdownlauncher.sh :

cd /
cd home/pi/LCDinterface


date
python shutdown.py 
echo ''
cd /

Content of shutdown.py :

if interrupt_happens:
  print ("shutting down")
  time.sleep(3)
  os.system("sudo shutdown -h now")

If I run python shutdown.py or sh shutdownlauncher.sh I can always see the output text 'shutting down' in my terminal. But If only cron starts running the bash script, which calls the python script. I never see the text, and it does not appear in the log. The date command in sh script appears in my log, but not in the terminal. Can you help me with that? How to edit the shutdownlauncher.sh or the cron job to see the outputs in the terminal, and in the log too? This whole thing runs on a Raspberry Pi 3, I am connected on SSH.

Content of my log file:

Fri Apr  7 19:26:33 CEST 2017
Fri Apr  7 19:36:11 CEST 2017
Fri Apr  7 21:18:45 CEST 2017
Sat Apr  8 00:08:09 CEST 2017
Sat Apr  8 00:29:31 CEST 2017
Sat Apr  8 10:08:17 CEST 2017
Sat Apr  8 11:58:35 CEST 2017

Answer 1

Instead of print function try use module syslog.

import syslog
syslog.syslog('System is going to shutdown')