Python里里面有个platform模块，可以得到操作系统的相关信息
import platform
platform.machine() # Returns the machine type, e.g. 'i386'
platform.node() # Returns the computer's network name
platform.platform(aliased=0, terse=0) # Returns a single string identifying the underlying platform
platform.processor() # Returns the (true) processor name
platform.python_branch() # Returns a string identifying the Python implementation branch.
platform.python_build() # Returns a tuple (buildno, builddate) stating the Python build number and date as strings.
platform.python_compiler() # Returns a string identifying the compiler used for compiling Python.
platform.python_version() # Returns the Python version as string 'major.minor.patchlevel'
platform.release() # Returns the system's release, e.g. '2.2.0' or 'NT'
platform.system() # Returns the system/OS name, e.g. 'Linux', 'Windows' or 'Java'.
platform.uname() # Fairly portable uname interface. Returns a tuple of strings (system,node,release,version,machine,processor) identifying the underlying platform.
platform.win32_ver(release='', version='', csd='', ptype='') # Get additional version information from the Windows Registry and return a tuple (version,csd,ptype) referring to version number, CSD level and OS type (multi/single processor).