Class _wmi_namespace

Return a list of instances of the WMI class. This is
 (probably) equivalent to querying with no qualifiers.

<pre class="code">
system.instances ("Win32_LogicalDisk")
# should be the same as
system.Win32_LogicalDisk ()
</pre>

Build and execute a wql query to fetch the specified list of fields from the specified wmi_classname + where_clause, then return the results as a list of simple class instances with attributes matching fields_list.

If fields is left empty, select * and pre-load all class attributes for each class returned.

Set up an event tracker on a WMI event. This function
returns an wmi_watcher which can be called to get the
next event. eg,

<pre class="code">
c = wmi.WMI ()

raw_wql = "SELECT * FROM __InstanceCreationEvent WITHIN 2 WHERE TargetInstance ISA 'Win32_Process'"
watcher = c.watch_for (raw_wql=raw_wql)
while 1:
  process_created = watcher ()
  print process_created.Name

# or
 
watcher = c.watch_for (
  notification_type="Creation",
  wmi_class="Win32_Process",
  delay_secs=2,
  Name='calc.exe'
)
calc_created = watcher ()
</pre>

Now supports timeout on the call to watcher, eg:

<pre class="code">
import pythoncom
import wmi
c = wmi.WMI (privileges=["Security"])
watcher1 = c.watch_for (
  notification_type="Creation",
  wmi_class="Win32_NTLogEvent",
  Type="error"
)
watcher2 = c.watch_for (
  notification_type="Creation",
  wmi_class="Win32_NTLogEvent",
  Type="warning"
)

while 1:
  try:
    error_log = watcher1 (500)
  except wmi.x_wmi_timed_out:
    pythoncom.PumpWaitingMessages ()
  else:
    print error_log

  try:
    warning_log = watcher2 (500)
  except wmi.x_wmi_timed_out:
    pythoncom.PumpWaitingMessages ()
  else:
    print warning_log
</pre>

Offer WMI classes as simple attributes. Pass through any untrapped unattribute to the underlying OLE object. This means that new or unmapped functionality is still available to the module user.