python
diff --git a/‎Objects/clinic/longobject.c.h
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+3-2Lines changed: 3 additions & 2 deletions b/‎Objects/clinic/longobject.c.h
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+3-2Lines changed: 3 additions & 2 deletions
diff --git a/‎Objects/clinic/typeobject.c.h
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+4-2Lines changed: 4 additions & 2 deletions b/‎Objects/clinic/typeobject.c.h
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+4-2Lines changed: 4 additions & 2 deletions
diff --git a/‎Objects/longobject.c
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+3-1Lines changed: 3 additions & 1 deletion b/‎Objects/longobject.c
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+3-1Lines changed: 3 additions & 1 deletion
diff --git a/‎Objects/typeobject.c
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+3-1Lines changed: 3 additions & 1 deletion b/‎Objects/typeobject.c
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+3-1Lines changed: 3 additions & 1 deletion
diff --git a/‎Python/bltinmodule.c
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+8-5Lines changed: 8 additions & 5 deletions b/‎Python/bltinmodule.c
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diff --git a/‎Python/clinic/bltinmodule.c.h
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+8-5Lines changed: 8 additions & 5 deletions b/‎Python/clinic/bltinmodule.c.h
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+8-5Lines changed: 8 additions & 5 deletions
@@ -5528,11 +5528,13 @@ int.__format__
 
     format_spec: unicode
     /
+
+Convert to a string according to format_spec.
 [clinic start generated code]*/
 
 static PyObject *
 int___format___impl(PyObject *self, PyObject *format_spec)
-/*[clinic end generated code: output=b4929dee9ae18689 input=e31944a9b3e428b7]*/
+/*[clinic end generated code: output=b4929dee9ae18689 input=d5e1254a47e8d1dc]*/
 {
     _PyUnicodeWriter writer;
     int ret;
 
@@ -5824,11 +5824,13 @@ object.__format__
   /
 
 Default object formatter.
+
+Return str(self) if format_spec is empty. Raise TypeError otherwise.
 [clinic start generated code]*/
 
 static PyObject *
 object___format___impl(PyObject *self, PyObject *format_spec)
-/*[clinic end generated code: output=34897efb543a974b input=7c3b3bc53a6fb7fa]*/
+/*[clinic end generated code: output=34897efb543a974b input=b94d8feb006689ea]*/
 {
     /* Issue 7994: If we're converting to a string, we
        should reject format specifications */
 
@@ -677,16 +677,19 @@ format as builtin_format
     format_spec: unicode(c_default="NULL") = ''
     /
 
-Return value.__format__(format_spec)
+Return type(value).__format__(value, format_spec)
 
-format_spec defaults to the empty string.
-See the Format Specification Mini-Language section of help('FORMATTING') for
-details.
+Many built-in types implement format_spec according to the
+Format Specification Mini-language. See help('FORMATTING').
+
+If type(value) does not supply a method named __format__
+and format_spec is empty, then str(value) is returned.
+See also help('SPECIALMETHODS').
 [clinic start generated code]*/
 
 static PyObject *
 builtin_format_impl(PyObject *module, PyObject *value, PyObject *format_spec)
-/*[clinic end generated code: output=2f40bdfa4954b077 input=88339c93ea522b33]*/
+/*[clinic end generated code: output=2f40bdfa4954b077 input=45ef3934b86d5624]*/
 {
     return PyObject_Format(value, format_spec);
 }
Original file line number	Diff line number	Diff line change
`@@ -5528,11 +5528,13 @@ int.__format__`
`5528`	`5528`
`5529`	`5529`	`format_spec: unicode`
`5530`	`5530`	`/`
	`5531`	`+`
	`5532`	`+Convert to a string according to format_spec.`
`5531`	`5533`	`[clinic start generated code]*/`
`5532`	`5534`
`5533`	`5535`	`static PyObject *`
`5534`	`5536`	`int___format___impl(PyObject self, PyObject format_spec)`
`5535`		`-/[clinic end generated code: output=b4929dee9ae18689 input=e31944a9b3e428b7]/`
	`5537`	`+/[clinic end generated code: output=b4929dee9ae18689 input=d5e1254a47e8d1dc]/`
`5536`	`5538`	`{`
`5537`	`5539`	`_PyUnicodeWriter writer;`
`5538`	`5540`	`int ret;`
Original file line number	Diff line number	Diff line change
`@@ -5824,11 +5824,13 @@ object.__format__`
`5824`	`5824`	`/`
`5825`	`5825`
`5826`	`5826`	`Default object formatter.`
	`5827`	`+`
	`5828`	`+Return str(self) if format_spec is empty. Raise TypeError otherwise.`
`5827`	`5829`	`[clinic start generated code]*/`
`5828`	`5830`
`5829`	`5831`	`static PyObject *`
`5830`	`5832`	`object___format___impl(PyObject self, PyObject format_spec)`
`5831`		`-/[clinic end generated code: output=34897efb543a974b input=7c3b3bc53a6fb7fa]/`
	`5833`	`+/[clinic end generated code: output=34897efb543a974b input=b94d8feb006689ea]/`
`5832`	`5834`	`{`
`5833`	`5835`	`/* Issue 7994: If we're converting to a string, we`
`5834`	`5836`	`should reject format specifications */`