Embedding Args in external program call

[brizflysdrones]

Needing to make a this os call happen stuck on how to do it.
print fname+ " %d Plants Detected" % len(keypoints)
need to preform the following
exiftool -description="%d" fname

 # Detect.
    reversemask=255-mask
    keypoints = detector.detect(reversemask)
    if keypoints:
        print fname+ " %d Detected" % len(keypoints)
        call([exiftool -description="%d" fname])
    else:
        print "No Found"

[buran]

Your code has nothing to do with call to external program.  Please, post your actual code that you have problem with. You may want to check subprocess module

[wavic]

He/she maybe is using it.

from subprocess import call

[buran]

Yes, however he/she edited the post to add the line

call([exiftool -description="%d" fname])

that's why I strike trough part of my post

[brizflysdrones]

subprocess.call(['exiftool', '-description='+str(len(keypoints)), fname]) is where im stuck at

Needing to make a this os call happen stuck on how to do it.
print fname+ " %d Plants Detected" % len(keypoints)
need to preform the following
exiftool -description="%d" fname

 # Detect.
    reversemask=255-mask
    keypoints = detector.detect(reversemask)
    if keypoints:
        print fname+ " %d Detected" % len(keypoints)
       call([exiftool -description="%d" fname])
    else:
        print "No Found"

[buran]

try this

# Detect.
   reversemask=255-mask
   keypoints = detector.detect(reversemask)
   if keypoints:
       args1 = '-description={}'.format(len(keypoints))
       print '{} {} Detected'.format(fname, len(keypoints))
       call(['exiftool', args1, fname])
   else:
       print "No Found"