macos 如何使用 Python 检测 Mac OS 版本？
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How to detect Mac OS version using Python?
提问by Chris Long
My application is assumed to be running on a Mac OS X system. However, what I need to do is figure out what version of Mac OS (or Darwin) it is running on, preferably as a number. For instance,
假设我的应用程序在 Mac OS X 系统上运行。但是，我需要做的是弄清楚它正在运行的 Mac OS（或 Darwin）版本，最好是一个数字。例如，
- "10.4.11" would return either 10.4 or 8
- "10.5.4" would return 10.5 or 9
- "10.6" would return 10.6 or 10
- “10.4.11”将返回 10.4 或 8
- “10.5.4”将返回 10.5 或 9
- “10.6”将返回 10.6 或 10
I found out that you could do this, which returns "8.11.0" on my system:
我发现你可以这样做，它在我的系统上返回“8.11.0”：
import os
os.system("uname -r")
Is there a cleaner way to do this, or at least a way to pull the first number from the result? Thanks!
有没有更简洁的方法来做到这一点，或者至少有一种方法可以从结果中提取第一个数字？谢谢！
回答by Alex Martelli
>>> import platform
>>> platform.mac_ver()
('10.5.8', ('', '', ''), 'i386')
As you see, the first item of the tuple mac_verreturns is a string, not a number (hard to make '10.5.8' into a number!-), but it's pretty easy to manipulate the 10.x.ystring into the kind of numbers you want. For example,
如您所见，元组mac_ver返回的第一项是字符串，而不是数字（很难将 '10.5.8' 变成数字！-），但是很容易将10.x.y字符串处理为您想要的数字类型。例如，
>>> v, _, _ = platform.mac_ver()
>>> v = float('.'.join(v.split('.')[:2]))
>>> print v
10.5
If you prefer the Darwin kernel version rather than the MacOSX version, that's also easy to access -- use the similarly-formatted string that's the third item of the tuple returned by platform.uname().
如果您更喜欢 Darwin 内核版本而不是 MacOSX 版本，这也很容易访问——使用类似格式的字符串，它是platform.uname().
回答by dingus9
If you are already using os, you might want to use os.uname()
如果你已经在使用 os，你可能想使用 os.uname()
import os
os.uname()
回答by Abeltang
platform.mac_ver() will return a tuple (release, versioninfo, machine
platform.mac_ver() 将返回一个元组（发布、版本信息、机器
So get mac version by code
所以通过代码获取mac版本
>>> platform.mac_ver()[0]
'10.8.4'
this method is easy
这个方法很简单
回答by agregtheitroade
You could parse the output of the /usr/bin/sw_vers command.
您可以解析 /usr/bin/sw_vers 命令的输出。
回答by Shane C. Mason
If you want to run a command - like 'uname' - and get the results as a string, use the subprocess module.
如果您想运行一个命令——比如“uname”——并以字符串形式获取结果，请使用subprocess 模块。
import subprocess
output = subprocess.Popen(["uname", "-r"], stdout=subprocess.PIPE).communicate()[0]
