Python 3.9.7 script failing to run on ubuntu crontab

Question

I am currently attempting to setup a raspberry pi 4 as an intercom system using ubuntu 21.10. I am using functioning python scripts to play mp3s via cron jobs.

My scripts are almost exactly the same as this except for differing mp3 files:

#!/usr/bin/env python3

from pygame import mixer
from pygame import time
mixer.init(frequency=90000, size=-16, channels=2, buffer=512)
mixer.music.load("/home/intercompi/Music/0min-closing.mp3")
mixer.music.set_volume(0.7)
mixer.music.play()

while mixer.music.get_busy():
    time.Clock().tick(10)
quit()

My crontab is as follows:

30 20 * * 1-4 /home/intercompi/30min-closing.py >> IntercomOutput.txt 2>&1
45 20 * * 1-4 /home/intercompi/15min-closing.py >> IntercomOutput.txt 2>&1
55 20 * * 1-4 /home/intercompi/5min-closing.py >> IntercomOutput.txt 2>&1
0 21 * * 1-4 /home/intercompi/0min-closing.py >> IntercomOutput.txt 2>&1
30 17 * * 0,5,6 /home/intercompi/30min-closing.py >> IntercomOutput.txt 2>&1
45 17 * * 0,5,6 /home/intercompi/15min-closing.py >> IntercomOutput.txt 2>&1
55 17 * * 0,5,6 /home/intercompi/5min-closing.py >> IntercomOutput.txt 2>&1
0 18 * * 0,5,6 /home/intercompi/0min-closing.py >> IntercomOutput.txt 2>&1

and my logging file outputs this:

/bin/sh: 1: usr/bin/python3: not found
/bin/sh: 1: usr/bin/python3: not found
/bin/sh: 1: usr/bin/python3: not found

I am fairly inexperienced with linux so I apologize if this is sloppy. This is partly a consolidation of my previous attempts at looking into this issue.

Answer 1

Does "/usr/bin/env python3" on command line navigates you to python console ?

you can also use the output of the "which" command in your script.

which python3

for instance

#!/usr/bin/python3

from pygame import mixer
from pygame import time
mixer.init(frequency=90000, size=-16, channels=2, buffer=512)
mixer.music.load("/home/intercompi/Music/0min-closing.mp3")
mixer.music.set_volume(0.7)
mixer.music.play()

while mixer.music.get_busy():
    time.Clock().tick(10)
quit()