PR python/12027:
* python/python-internal.h (frame_object_type): Declare.
* python/py-symbol.c (sympy_needs_frame): New function.
(sympy_value): New function.
(symbol_object_getset): Add "needs_frame".
(symbol_object_methods): Add "value".
* python/py-frame.c (frame_object_type): No longer static.
gdb/doc
* gdb.texinfo (Symbols In Python): Document Symbol.needs_frame and
Symbol.value.
gdb/testsuite
* gdb.python/py-symbol.exp: Test Symbol.needs_frame and
Symbol.value.
* gdb.python/py-symbol.c (qq): Set default value.