Syntax error near unexpected token 'GPIO.BCM'

Question

I am having a problem with a (apparently) very commonly used script for relay automation.

The script is as follows:

 #!/usr/bin/python
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

# init list with pin numbers

pinList = [2, 3, 4, 17, 27, 22, 10, 9]

# loop through pins and set mode and state to 'low'

for i in pinList: 
    GPIO.setup(i, GPIO.OUT) 
    GPIO.output(i, GPIO.HIGH)

# time to sleep between operations in the main loop

SleepTimeL = 2

# main loop

try:
  GPIO.output(2, GPIO.LOW)
  print "ONE"
  time.sleep(SleepTimeL); 
  GPIO.output(3, GPIO.LOW)
  print "TWO"
  time.sleep(SleepTimeL);  
  GPIO.output(4, GPIO.LOW)
  print "THREE"
  time.sleep(SleepTimeL);
  GPIO.output(17, GPIO.LOW)
  print "FOUR"
  time.sleep(SleepTimeL);
  GPIO.output(27, GPIO.LOW)
  print "FIVE"
  time.sleep(SleepTimeL);
  GPIO.output(22, GPIO.LOW)
  print "SIX"
  time.sleep(SleepTimeL);
  GPIO.output(10, GPIO.LOW)
  print "SEVEN"
  time.sleep(SleepTimeL);
  GPIO.output(9, GPIO.LOW)
  print "EIGHT"
  time.sleep(SleepTimeL);
  GPIO.cleanup()
  print "Good bye!"

# End program cleanly with keyboard
except KeyboardInterrupt:
  print "  Quit"

  # Reset GPIO settings
  GPIO.cleanup()

I have the latest Wheezy image as well as Phyton (2.6, 2.7 & 3, GPIO-0.5.2a & 0.5.5) .. When I use

./test.sh (my script is named "test")

I get:

Traceback (most recent call last):
  File "./test.sh", line 5, in <module>
    GPIO.setmode(GPIO.BCM)
AttributeError: 'module' object has no attribute 'setmode'

So then I use:

bash -x text.sh

and get

+ import RPi.GPIO as GPIO
test.sh: line 2: import: command not found
+ import time
test.sh: line 3: import: command not found
+import time
test.sh: line 5: syntax error near unexpected token 'GPIO.BCM'
test.sh: line 5: 'GPIO.setmode(GPIO.BCM)

I have also tried

GPIO.setmode(BCM)

with the same results.

Any suggestions would be immensely appreciated. I am a complete n00b with the pi and this has been driving me nuts for....days.

Answer 1

Why don't you just make test.sh run the following

sudo python YourPythonCode.py

remember to make it executable

chmod 755 test.sh

copy all your listed code into YourPythonCode.py

Answer 2

 #!/usr/bin/python
import RPi.GPIO as GPIO

The mistake is right here, in the first line. A shebang must begin at the very first character of the script, while in your code it's preceded by a space character. This makes the script be interpreted by your default shell, rather than a Python interpreter.

Remove the space to make first two characters #!, and the error should vanish.

Answer 3

Rename your script to test.py and then run it with sudo python test.py (sudo is needed for GPIO access)