Skip to main content
Join the official 2020 Python Developers SurveyStart the survey!

running commands through a system shell

Project description

Look at envoy first. envoy.run(command) waits for completion before returning output, which is not what you need when wrapping long running tools, where output needed as soon as it appears, shellrun.run(command) does not intercept output - there is a separate command for that.

>>> import shellrun
>>> r = shellrun.run('uptime')
 04:06:37 up 2 min,  1 user,  load average: 0.20, 0.19, 0.08
>>> r.output
>>> r.success
True
>>> r.retcode
0

To capture output envoy-style, use run_capture. stdout and stderr are merged, because that’s how users see it:

>>> r = shellrun.run_capture('uptime')
>>> r.output
' 04:07:16 up 2 min,  1 user,  load average: 0.11, 0.17, 0.08\n'
>>> r.success
True
>>> r.retcode
0

Quick comparison of result objects:

envoy.Response shellrun.Result
.command .command
.status_code .retcode
  .success
  .output
.std_out  
.std_err  

Example of .success usage:

from shellrun import run_capture

r = run_capture('ls -la')
if r.success:
    print(r.output)
else:
    print("Error: '%s' exit code %s" % (r.command, r.retcode))
    print("         ...")
    # print last three lines of output
    for line in r.output.splitlines()[-3:]:
        print("       %s" % line)

Project details


Release history Release notifications | RSS feed

This version

3.1

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for shellrun, version 3.1
Filename, size File type Python version Upload date Hashes
Filename, size shellrun-3.1.zip (3.9 kB) File type Source Python version None Upload date Hashes View

Supported by

Pingdom Pingdom Monitoring Google Google Object Storage and Download Analytics Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page