Add definitions for standard warning category classes (PyExc_Warning

etc.).

Python/exceptions.c

@@ -830,6 +830,8 @@ PyMethodDef SyntaxError_methods[] = {
 
 
 
+/* Exception doc strings */
+
 static char
 AssertionError__doc__[] = "Assertion failed.";
 
@@ -876,6 +878,25 @@ IndentationError__doc__[] = "Improper indentation.";
 static char
 TabError__doc__[] = "Improper mixture of spaces and tabs.";
 
+/* Warning category docstrings */
+
+static char
+Warning__doc__[] = "Base class for warning categories.";
+
+static char
+UserWarning__doc__[] = "Base class for warnings generated by user code.";
+
+static char
+DeprecationWarning__doc__[] =
+"Base class for warnings about deprecated features.";
+
+static char
+SyntaxWarning__doc__[] = "Base class for warnings about dubious syntax.";
+
+static char
+RuntimeWarning__doc__[] =
+"Base class for warnings about dubious runtime behavior.";
+
 
 
 /* module global functions */
@@ -928,6 +949,13 @@ PyObject *PyExc_WindowsError;
  */
 PyObject *PyExc_MemoryErrorInst;
 
+/* Predefined warning categories */
+PyObject *PyExc_Warning;
+PyObject *PyExc_UserWarning;
+PyObject *PyExc_DeprecationWarning;
+PyObject *PyExc_SyntaxWarning;
+PyObject *PyExc_RuntimeWarning;
+
 
 
 /* mapping between exception names and their PyObject ** */
@@ -992,6 +1020,14 @@ static struct {
  {"UnicodeError", &PyExc_UnicodeError, &PyExc_ValueError, UnicodeError__doc__},
  {"SystemError",  &PyExc_SystemError, 0, SystemError__doc__},
  {"MemoryError",  &PyExc_MemoryError, 0, MemoryError__doc__},
+ /* Warning categories */
+ {"Warning", &PyExc_Warning, &PyExc_Exception, Warning__doc__},
+ {"UserWarning", &PyExc_UserWarning, &PyExc_Warning, UserWarning__doc__},
+ {"DeprecationWarning", &PyExc_DeprecationWarning, &PyExc_Warning,
+  DeprecationWarning__doc__},
+ {"SyntaxWarning", &PyExc_SyntaxWarning, &PyExc_Warning, SyntaxWarning__doc__},
+ {"RuntimeWarning", &PyExc_RuntimeWarning, &PyExc_Warning,
+  RuntimeWarning__doc__},
  /* Sentinel */
  {NULL}
 };