Question

I tried os.popen and the like ways. But it does not seem to work for me. I’m wondering if there’s anything different between a command 'echo xxxx' and 'java -version', and how can I get 'java -version' output with python code.

Answer 1

import subprocess
sp = subprocess.Popen(["java", "-version"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
print sp.communicate()
print sp.wait()

is the real way to go.

An even simpler way could be

print subprocess.check_output(["java", "-version"], stderr=subprocess.STDOUT)