How do I check the operating system in Python?
I want to check the operating system (on the computer where the script runs).
I know I can use os.system('uname -o') in Linux, but it gives me a message in the console, and I want to write to a variable.
It will be okay if the script can tell if it is Mac, Windows or Linux. How can I check it?
You can use sys.platform:
from sys import platform
if platform == "linux" or platform == "linux2":
# linux
elif platform == "darwin":
# OS X
elif platform == "win32":
# Windows...
sys.platform has finer granularity than sys.name.
For the valid values, consult the documentation.
See also the answer to “What OS am I running on?”
If you want to know on which platform you are on out of "Linux", "Windows", or "Darwin" (Mac), without more precision, you should use:
>>> import platform
>>> platform.system()
'Linux' # or 'Windows'/'Darwin'
The platform.system function uses uname internally.
Linux, Windows, Java or an empty string.devdocs.io/python~3.7/library/platform#platform.system
You can get a pretty coarse idea of the OS you're using by checking sys.platform.
Once you have that information you can use it to determine if calling something like os.uname() is appropriate to gather more specific information. You could also use something like Python System Information on unix-like OSes, or pywin32 for Windows.
There's also psutil if you want to do more in-depth inspection without wanting to care about the OS.
More detailed information are available in the platform module.
platform module have any advantage over sys.platform? When would I want to use which approach?
platform module. Just click the link for documentation.
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"cygwin"not"win32"as someone might expect."linux2"is no longer a possible value ofplatform(see the linked docs for corroboration) and so if you only need to support Python 3.3 and later you can safely delete the ` or platform == "linux2"` clause from the first condition.