On Thu, Jan 5, 2017 at 7:09 AM, H Krishnan <[email protected]> wrote:
>
> I am working on embedding Python in my application.
You forgot to tell us the version of Python that you're embedding.
> I have redirected sys.stdin and sys.stdout to call methods from a Qt TextEdit
> widget. Everything works fine except that the Python prompt does not always
> come in a new line:
>
>>>> dir()
> ['__builtins__', '__doc__', '__name__', '__package__']>>>
>
> Why doesn't the prompt appear in a new line as with the default stdout?
Are you using code.InteractiveConsole / code.interact?
If not, in what mode do you compile, Py_file_input ("exec") or Py_single_input
("single")? The latter executes PRINT_EXPR:
>>> dis.dis(compile('1', '', 'single'))
1 0 LOAD_CONST 0 (1)
3 PRINT_EXPR
4 LOAD_CONST 1 (None)
7 RETURN_VALUE
PRINT_EXPR in turn calls sys.displayhook on the value it pops from the
stack. The default hook writes the repr of the value and a newline to
sys.stdout, and it also references the value as "_" in the builtins module (2.x
__builtin__).
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