Detect host operating system in Python mode?

jeremydouglass

Most of the common answers for how to detect the host operating system in Python involve using os, platform, or psutil. However in Python mode these don't return win/mac/linux or any variation on that, they only identify the jython Java platform.

import os
print os.name
import platform
print platform.system()

Output:

java
Java

Is there any way to determine what os a Python mode / processing.py sketch is running on?

kfrajer

Worth to try: https://stackoverflow.com/questions/23372584/jython-how-to-retrieve-the-operating-system-name

Kf

jeremydouglass

Nice search-foo, @kfrajer. That solved it for me.

import sys

def get_os_version():
    ver = sys.platform.lower()
    if ver.startswith('java'):
        import java.lang
        ver = java.lang.System.getProperty("os.name").lower()
    return ver

print(get_os_version())

Output:

mac os x

Strange, your post isn't giving me an option of accepting an answer....

kfrajer

Glad to help :)>-

Kf

GoToLoop

Just use this.platform like I did at: :ar!
https://Forum.Processing.org/two/discussion/23471/combining-two-pieces-of-code/p2#Item_87

BASH = this.platform == WINDOWS and 'cmd /C ' or 'bash -c '

GoToLoop

Available constants: WINDOWS, LINUX, MACOSX & OTHER. :>

GoToLoop

And you can use this.platform as the index value for platformNames[]: :)>-

os = platformNames[this.platform]
print os
exit()

jeremydouglass

Got it. Didn't realize it was all built-in!

print OTHER, WINDOWS, MACOSX, LINUX

0 1 2 3

for p in [OTHER, WINDOWS, MACOSX, LINUX]:
    print platformNames[p]

other
windows
macosx
linux

print this.platform

2

print platformNames[this.platform]

macosx

GoToLoop

And b/c platform is a static field, we can also prefix it w/ PApplet instead: ;)

os = platformNames[PApplet.platform]
print os
exit()

https://GitHub.com/processing/processing/blob/master/core/src/processing/core/PApplet.java#L136

Although ideally we shouldn't need any prefixes if platform was global like the other PApplet members. 8-|