diff --git a/Lib/ctypes/test/__init__.py b/Lib/ctypes/test/__init__.py
index 70d647b..5223092 100644
--- a/Lib/ctypes/test/__init__.py
+++ b/Lib/ctypes/test/__init__.py
@@ -67,9 +67,6 @@
             if verbosity > 1:
                 print >> sys.stderr, "Skipped %s: %s" % (modname, detail)
             continue
-        except Exception, detail:
-            print >> sys.stderr, "Warning: could not import %s: %s" % (modname, detail)
-            continue
         for name in dir(mod):
             if name.startswith("_"):
                 continue
diff --git a/Lib/random.py b/Lib/random.py
index 5879340..8b4c38e 100644
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -413,9 +413,11 @@
     def expovariate(self, lambd):
         """Exponential distribution.
 
-        lambd is 1.0 divided by the desired mean.  (The parameter would be
-        called "lambda", but that is a reserved word in Python.)  Returned
-        values range from 0 to positive infinity.
+        lambd is 1.0 divided by the desired mean.  It should be
+        nonzero.  (The parameter would be called "lambda", but that is
+        a reserved word in Python.)  Returned values range from 0 to
+        positive infinity if lambd is positive, and from negative
+        infinity to 0 if lambd is negative.
 
         """
         # lambd: rate lambd = 1/mean
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index 74304f7..b995557 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -168,7 +168,6 @@
         -context.Emin > DEC_MAX_MATH):
         return True
     if not v._is_special and v and (
-        len(v._int) > DEC_MAX_MATH or
         v.adjusted() > DEC_MAX_MATH or
         v.adjusted() < 1-2*DEC_MAX_MATH):
         return True
diff --git a/Lib/test/test_import.py b/Lib/test/test_import.py
index 7318a9e..db9c8ef 100644
--- a/Lib/test/test_import.py
+++ b/Lib/test/test_import.py
@@ -269,7 +269,7 @@
             if os.path.exists(file_name):
                 os.remove(file_name)
         if os.path.exists(self.dir_name):
-            os.rmdir(self.dir_name)
+            shutil.rmtree(self.dir_name)
 
     def import_module(self):
         ns = globals()