Index: Lib/configparser.py
===================================================================
--- Lib/configparser.py	(revision 83048)
+++ Lib/configparser.py	(working copy)
@@ -52,12 +52,13 @@
         The filename defaults to fp.name; it is only used in error
         messages (if fp has no `name' attribute, the string `<???>' is used).
 
-    get(section, option, raw=False, vars=None)
+    get(section, option, raw=False, vars=None, *, default)
         return a string value for the named option.  All % interpolations are
         expanded in the return values, based on the defaults passed into the
         constructor and the DEFAULT section.  Additional substitutions may be
         provided using the `vars' argument, which must be a dictionary whose
-        contents override any pre-existing defaults.
+        contents override any pre-existing defaults. If an exception is raised
+        and the default keyword argument is present, return the given value.
 
     getint(section, options)
         like get(), but convert value to an integer
@@ -315,7 +316,15 @@
                 filename = '<???>'
         self._read(fp, filename)
 
-    def get(self, section, option):
+    def get(self, section, option, *args, **kwds):
+        try:
+            return self._getit(section, option, *args, **kwds)
+        except Exception as exc:
+            if "default" in kwds:
+                return kwds["default"]
+            raise exc
+
+    def _getit(self, section, option, **kwds):
         opt = self.optionxform(option)
         if section not in self._sections:
             if section != DEFAULTSECT:
@@ -344,20 +353,20 @@
             del d["__name__"]
         return d.items()
 
-    def _get(self, section, conv, option):
-        return conv(self.get(section, option))
+    def _get(self, section, conv, option, **kwds):
+        return conv(self.get(section, option, **kwds))
 
-    def getint(self, section, option):
-        return self._get(section, int, option)
+    def getint(self, section, option, **kwds):
+        return self._get(section, int, option, **kwds)
 
-    def getfloat(self, section, option):
-        return self._get(section, float, option)
+    def getfloat(self, section, option, **kwds):
+        return self._get(section, float, option, **kwds)
 
     _boolean_states = {'1': True, 'yes': True, 'true': True, 'on': True,
                        '0': False, 'no': False, 'false': False, 'off': False}
 
-    def getboolean(self, section, option):
-        v = self.get(section, option)
+    def getboolean(self, section, option, **kwds):
+        v = self.get(section, option, **kwds)
         if v.lower() not in self._boolean_states:
             raise ValueError('Not a boolean: %s' % v)
         return self._boolean_states[v.lower()]
@@ -538,7 +547,7 @@
 
 class ConfigParser(RawConfigParser):
 
-    def get(self, section, option, raw=False, vars=None):
+    def get(self, section, option, raw=False, vars=None, **kwds):
         """Get an option value for a given section.
 
         All % interpolations are expanded in the return values, based on the
@@ -549,6 +558,9 @@
 
         The section DEFAULT is special.
         """
+        return super().get(section, option, raw, vars, **kwds)
+
+    def _getit(self, section, option, raw=False, vars=None, **kwds):
         d = self._defaults.copy()
         try:
             d.update(self._sections[section])
@@ -699,3 +711,4 @@
             raise ValueError("invalid interpolation syntax in %r at "
                              "position %d" % (value, percent_index))
         ConfigParser.set(self, section, option, value)
+