Python script runs fine except when executed as a service - Raspberry Pi Forums

when run

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sudo service run_moisture start

error...

import.im6: unable open x server `' @ error/import.c/importimagecommand/368.
from: can't read /var/mail/time
from: can't read /var/mail/datetime
/home/pi/moisture.py: 5: /home/pi/moisture.py: syntax error: "(" unexpected

don't see unused '(' in either script.
python script runs fine when run

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python /home/pi/moisture.py

of course script terminated when close ssh session.
here bash script start python script

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### begin init info # provides:          run_moisture # required-start:    $remote_fs $syslog # required-stop:     $remote_fs $ syslog # default-start:     2 3 4 5 # default-stop:      0 1 6 # short-description: runs moisture reciever on startup # description:       enables logging of soil moisture ### end init info   case "$1" in   'start')     echo "starting moisture-sensor"     /home/pi/moisture.py &      ;;    'stop')     echo "stopping moisture-sensor"     killall moisture.py     ;;   *)     echo "usage: /etc/init.d/run_moisture {start|stop}"     exit 1     ;; esac   exit 0 

, here python script

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import serial time import strftime datetime import datetime, time, timedelta  ser = serial.serial('/dev/ttyacm0',9600)  starttime = datetime.now() try:     while 1:         line=ser.readline().rstrip()         #line2=line1.rstrip('[')         #line3=line2.rstrip(']')         #line=line3.rstrip("'")         temp2=line.split(",")         #print 'temp2', temp2         = datetime.now() - timedelta(hours=4)         #elapsedtime = now-starttime         #elapsedseconds = (elapsedtime.microseconds+(elapsedtime.days*24*3600+e$         #print("%s,%s,%s,&s"%(now.strftime("%y-%m-%d %h:%m:%s"),elapsedseconds,$         print("%s,%s,&s"%(now.strftime("%y-%m-%d %h:%m:%s"),temp2))         f=open('/mnt/moisture/moisturelog.csv','a')         #print >>f,("%s,%s,%s,&s,\n"%(now.strftime("%y-%m-%d, %h:%m:%s"),elapse$         print >>f,("%s,%s,&s,\n"%(now.strftime("%y-%m-%d, %h:%m:%s"),temp2))         f.close() except keyboardinterrupt:     print "\ndone"  

have been working on 2 weeks , @ extent of knowledge. have searched google each part of error , haven't found resolutions seem relevant.

the first problem see you're trying directly execute python script has no shebang:

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case "$1" in   'start')     echo "starting moisture-sensor"     /home/pi/moisture.py &      ;; 

i add 'shebang' first line of python

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#!/usr/bin/env python 

, make file executable

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chmod a+x /home/pi/moisture.py

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