Passing a command line argument into a Python Script causes error -


i have python example script adafruit controls servo , works!

i execute change servomin , servomax values calling 2 values command line. problem having seems not when import sys , set servomin = (sys.argv). im not sure why not accepting int or str. ideas?

here code body:

#!/usr/bin/python  adafruit_pwm_servo_driver import pwm import time import sys  # =========================================================================== # example code # ===========================================================================  # initialise pwm device using default address # bmp = pwm(0x40, debug=true) pwm = pwm(0x50, debug=true)  servomin = 150  # min pulse length out of 4096 servomax = 600  # max pulse length out of 4096  def setservopulse(channel, pulse):   pulselength = 1000000                   # 1,000,000 per second   pulselength /= 60                       # 60 hz   print "%d per period" % pulselength   pulselength /= 4096                     # 12 bits of resolution   print "%d per bit" % pulselength   pulse *= 1000   pulse /= pulselength   pwm.setpwm(channel, 0, pulse)  pwm.setpwmfreq(60)                        # set frequency 60 hz while (true):   # change speed of continuous servo on channel o   pwm.setpwm(0, 0, servomin)   time.sleep(1)   pwm.setpwm(0, 0, servomax)   time.sleep(1)

sys.argv list of arguments, need access arguments, convert them ints.

this should it:

servomin = int(sys.argv[1]) servomax = int(sys.argv[2])

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