python使用ctypes模块调用windowsapi获取系统版本示例

"通过调用Window API判断当前系统版本"
# 演示通过ctypes调用windows api函数.
# 作者已经知道python32能够实现相同功能
# 语句末尾加分号，纯属个人习惯
# 仅作部分版本判断，更详细的版本判断推荐系统OSVERSIONINFOEX结构体

import ctypes;

class OSINFO(ctypes.Structure):
_fields_ = [
("dwOSVersionInfoSize",ctypes.c_long),
("dwMajorVersion",ctypes.c_long),
("dwMinorVersion",ctypes.c_long),
("dwBuildNumber",ctypes.c_long),
("dwPlatformId",ctypes.c_long),
("szCSDVersion",ctypes.c_char*128)
];

def GetSystemVersionString():
kernel32 = ctypes.windll.LoadLibrary("kernel32.dll");
os = OSINFO();
os.dwOSVersionInfoSize = ctypes.sizeof(os);
if kernel32.GetVersionExA(ctypes.byref(os))==0:
return "Null Version";
if os.dwPlatformId==1: #windows 95/98/me
if os.dwMajorVersion==4 and os.dwMinorVersion==0:
verStr = "windows 95";
elif os.dwMajorVersion==4 and os.dwMinorVersion==10:
verStr = "windows 98";
elif os.dwMajorVersion==4 and os.dwMinorVersion==90:
verStr = "windows me";
else:
verStr = "unknown version";
elif os.dwPlatformId==2: #windows vista/server 2008/server 2003/xp/2000/nt
if os.dwMajorVersion==4 and os.dwMinorVersion==0:
verStr = "windows nt 4.0";
elif os.dwMajorVersion==5 and os.dwMinorVersion==0:
verStr = "windows 2000";
elif os.dwMajorVersion==5 and os.dwMinorVersion==1:
verStr = "windows xp";
elif os.dwMajorVersion==5 and os.dwMinorVersion==2:
verStr = "windows 2003";
elif os.dwMajorVersion==6 and os.dwMinorVersion==0:
verStr = "windows vista"; # or 2008
elif os.dwMajorVersion>=0:
verStr = "windows 7";
else:
verStr = "unknown version";
else:
return "unknown Version";
return verStr+" build"+str(os.dwBuildNumber)+" "+ctypes.string_at(os.szCSDVersion);

if __name__ == "__main__":
print(GetSystemVersionString());