Close #12028: Make threading._get_ident() public, rename it to

threading.get_ident() and document it. This function was used by
_thread.get_ident().

Lib/logging/__init__.py

@@ -41,10 +41,9 @@ except ImportError: #pragma: no cover
     codecs = None
 
 try:
-    import _thread as thread
     import threading
 except ImportError: #pragma: no cover
-    thread = None
+    threading = None
 
 __author__  = "Vinay Sajip <vinay_sajip@red-dove.com>"
 __status__  = "production"
@@ -199,7 +198,7 @@ def _checkLevel(level):
 #the lock would already have been acquired - so we need an RLock.
 #The same argument applies to Loggers and Manager.loggerDict.
 #
-if thread:
+if threading:
     _lock = threading.RLock()
 else: #pragma: no cover
     _lock = None
@@ -278,8 +277,8 @@ class LogRecord(object):
         self.created = ct
         self.msecs = (ct - int(ct)) * 1000
         self.relativeCreated = (self.created - _startTime) * 1000
-        if logThreads and thread:
-            self.thread = thread.get_ident()
+        if logThreads and threading:
+            self.thread = threading.get_ident()
             self.threadName = threading.current_thread().name
         else: # pragma: no cover
             self.thread = None
@@ -773,7 +772,7 @@ class Handler(Filterer):
         """
         Acquire a thread lock for serializing access to the underlying I/O.
         """
-        if thread:
+        if threading:
             self.lock = threading.RLock()
         else: #pragma: no cover
             self.lock = None