How to assign output of os.system to a variable [duplicate]

Question

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Python: How to get stdout after running os.system? [duplicate] (6 answers)

Closed 8 years ago.

I want to run this command from python

/opt/vc/bin/vcgencmd measure_temp

when I run it in python it prints the temperature to the screen and returns 0. When I try to assign it to a variable it assigns 0 too.

>>> import os
>>> os.system('/opt/vc/bin/vcgencmd measure_temp')
temp=42.8'C
0
>>> temp=os.system('/opt/vc/bin/vcgencmd measure_temp')
temp=42.8'C
>>> temp
0
>>>

How can I run this command in python and assign the actual temperature to a variable?

Answer 1

os.system doesn't returns the output, use subprocess.check_output for that.