Use bound methods in pydoc (#7426)

Author: AlexWaygood

stdlib/pydoc.pyi

@@ -75,8 +75,9 @@ class HTMLRepr(Repr):
     def repr_unicode(self, x: AnyStr, level: complex) -> str: ...
 
 class HTMLDoc(Doc):
-    repr: Callable[[object], str]
-    escape: Callable[[str], str]
+    _repr_instance: HTMLRepr = ...
+    repr = _repr_instance.repr
+    escape = _repr_instance.escape
     def page(self, title: str, contents: str) -> str: ...
     def heading(self, title: str, fgcol: str, bgcol: str, extras: str = ...) -> str: ...
     def section(
@@ -149,7 +150,8 @@ class TextRepr(Repr):
     def repr_instance(self, x: object, level: complex) -> str: ...
 
 class TextDoc(Doc):
-    repr: Callable[[object], str]
+    _repr_instance: TextRepr = ...
+    repr = _repr_instance.repr
     def bold(self, text: str) -> str: ...
     def indent(self, text: str, prefix: str = ...) -> str: ...
     def section(self, title: str, contents: str) -> str: ...