finding the disk usage and cpu usage using python on windows

while fixing a bug on mozilla regression project i found a bug which wanted to determine wether my system is win32 or win64  and by default make download 32 bit version 

i havnt fixed the bug yet 

but i think i have found a way to determine whether the system is using windows 32 bit or 64 bit  using the following code 

which is a very short code actually 

 

import _winreg
windowsbit = get_registry_value(
"HKEY_LOCAL_MACHINE",
"SYSTEM\\CurrentControlSet\Control\\Session Manager\\Environment",
"PROCESSOR_ARCHITECTURE")
print windowsbit

i had a itch  with my windows system i wanted to explore into the windows registry and get way to find the  ram and cpu usage of the system . so i wrote a code to get them

        
import ctypes

def ram():
    kernel32 = ctypes.windll.kernel32
    c_ulong = ctypes.c_ulong
    class MEMORYSTATUS(ctypes.Structure):
        _fields_ = [
            ('dwLength', c_ulong),
            ('dwMemoryLoad', c_ulong),
            ('dwTotalPhys', c_ulong),
            ('dwAvailPhys', c_ulong),
            ('dwTotalPageFile', c_ulong),
            ('dwAvailPageFile', c_ulong),
            ('dwTotalVirtual', c_ulong),
            ('dwAvailVirtual', c_ulong)
        ]

    memoryStatus = MEMORYSTATUS()
    memoryStatus.dwLength = ctypes.sizeof(MEMORYSTATUS)
    kernel32.GlobalMemoryStatus(ctypes.byref(memoryStatus))
    mem = memoryStatus.dwTotalPhys / (1024*1024)
    availRam = memoryStatus.dwAvailPhys / (1024*1024)
    if mem >= 1000:
        mem = mem/1000
        totalRam = str(mem) + ' GB'
    else:
#        mem = mem/1000000
        totalRam = str(mem) + ' MB'
    return (totalRam, availRam)
print"ram is :"
print ram()

This next code snippet is used to find out what processor is in the client PC:

i am using the wmi and pythoncom module  if i fail to get the registry values using _winreg (windows registry errors like windows registry path doesnot exist )  

def cpu():
    try:
        cputype = get_registry_value(
            "HKEY_LOCAL_MACHINE", 
            "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0",
            "ProcessorNameString")
    except:
        import wmi, pythoncom
        pythoncom.CoInitialize() 
        c = wmi.WMI()
        for i in c.Win32_Processor ():
            cputype = i.Name
        pythoncom.CoUninitialize()
 
    if cputype == 'AMD Athlon(tm)':
        c = wmi.WMI()
        for i in c.Win32_Processor ():
            cpuspeed = i.MaxClockSpeed
        cputype = 'AMD Athlon(tm) %.2f Ghz' % (cpuspeed / 1000.0)
    elif cputype == 'AMD Athlon(tm) Processor':
        import wmi
        c = wmi.WMI()
        for i in c.Win32_Processor ():
            cpuspeed = i.MaxClockSpeed
        cputype = 'AMD Athlon(tm) %s' % cpuspeed
    else:
        pass
    return cputype