Getting realtime and full output using subprocess

Question

I am trying to get the realtime output as well as the full output. I have the below code that outputs the realtime output of the command very well but I also need to capture the full output which can then be sent in an email without interrupting the realtime output

backup = subprocess.Popen("rsync ....", shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
for line in iter(backup.stdout.readline, b''):
   print(">>> " + line.rstrip())

I have tried adding the following but it causes the realtime output not to display

output = backup.stdout.read()

randomir · Accepted Answer · 2017-07-24 11:29:30Z

1

Why don't you collect the complete/full output along the way?

backup = subprocess.Popen("rsync ....", shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
full = []
for line in iter(backup.stdout.readline, b''):
   line = line.rstrip().decode('utf8')
   print(">>>", line)
   full.append(line)

output = '\n'.join(full)
print("full output:", output)

edited Jul 24, 2017 at 11:29

answered Jul 24, 2017 at 11:13

randomir

18.8k1 gold badge46 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Getting realtime and full output using subprocess

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related