On 2/7/07, Greg Ewing <[EMAIL PROTECTED]> wrote:
Fabio Zadrozny wrote:
> frame = findFrame(thread_id, frame_id)
> exec '%s=%s' % (attr, expression) in frame.f_globals, frame.f_locals
The locals of a function are actually stored in an array.
When you access them as a dict using locals(), all you
get is a dict containing a copy of their current values.
Modifying that dict doesn't affect the underlying array.
It seems that reading the f_locals of a frame does the
same thing. To modify the locals, you would need to poke
values into the original array -- but it doesn't seem
to be exposed to Python.
So it looks like you're out of luck.
Would it be ok to add a feature request for that? I initially thought it was
completely read-only, but I find it strange that it affects the topmost
frame correctly (so, it seems that even though I get a copy, when I alter
that copy on the topmost frame it affects it correctly)... anyone has a clue
why that happens?
It seems to affect pdb too...
Consider the code:
if __name__ == '__main__':
def call1():
v_on_frame1 = 10
print 'v_on_frame1', v_on_frame1
def call0():
import pdb;pdb.set_trace()
v_on_frame0 = 10
call1()
print 'v_on_frame0', v_on_frame0
call0()
#when modifying in the current frame
x:\scbr15\source\python\tests_base\empty_test.py(9)call0()
-> v_on_frame0 = 10
(Pdb) n
x:\scbr15\source\python\tests_base\empty_test.py(10)call0()
-> call1()
(Pdb) v_on_frame0 = 40
(Pdb) c
v_on_frame1 10
v_on_frame0 40
#when modifying an upper frame it does not work
x:\scbr15\source\python\tests_base\empty_test.py(9)call0()
-> v_on_frame0 = 10
(Pdb) n
x:\scbr15\source\python\tests_base\empty_test.py(10)call0()
-> call1()
(Pdb) s
--Call--
x:\scbr15\source\python\tests_base\empty_test.py(3)call1()
-> def call1():
(Pdb) n
x:\scbr15\source\python\tests_base\empty_test.py(4)call1()
-> v_on_frame1 = 10
(Pdb) u
x:\scbr15\source\python\tests_base\empty_test.py(10)call0()
-> call1()
(Pdb) v_on_frame0 = 40
(Pdb) d
x:\scbr15\source\python\tests_base\empty_test.py(4)call1()
-> v_on_frame1 = 10
(Pdb) c
v_on_frame1 10
v_on_frame0 10
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