Avoid "name Exception is not defined" when exiting

At interpreter shutdown, the module's global variables are set to None
before the module itself is released. __del__ methods may be called in
those precarious circumstances, and should not rely on any global state.

Author: Cito

dbutils/pooled_db.py

@@ -389,7 +389,7 @@ def __del__(self):
         """Delete the pool."""
         try:
             self.close()
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass
 
     def _wait_lock(self):
@@ -437,7 +437,7 @@ def __del__(self):
         """Delete the pooled connection."""
         try:
             self.close()
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass
 
 
@@ -524,5 +524,5 @@ def __del__(self):
         """Delete the pooled connection."""
         try:
             self.close()
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass

dbutils/pooled_pg.py

@@ -244,7 +244,7 @@ def __del__(self):
         """Delete the pool."""
         try:
             self.close()
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass
 
 
@@ -291,5 +291,5 @@ def __del__(self):
         """Delete the pooled connection."""
         try:
             self.close()
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass

dbutils/steady_db.py

@@ -512,7 +512,7 @@ def __del__(self):
         """Delete the steady connection."""
         try:
             self._close()  # make sure the connection is closed
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass
 
 
@@ -697,5 +697,5 @@ def __del__(self):
         """Delete the steady cursor."""
         try:
             self.close()  # make sure the cursor is closed
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass

dbutils/steady_pg.py

@@ -324,5 +324,5 @@ def __del__(self):
         """Delete the steady connection."""
         try:
             self._close()  # make sure the connection is closed
-        except Exception:
+        except:  # builtin Exceptions might not exist any more
             pass