Message 358766 - Python tracker

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Author	BTaskaya
Recipients	BTaskaya, nanjekyejoannah, steveire, vstinner
Date	2019-12-21.08:12:40
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1576915960.42.0.984326631069.issue30905@roundup.psfhosted.org>
In-reply-to

Content
> (1) BUT: The value of 'a' is not printed Isn't this the expected behavior for file input? You need to call print() in order to get 'a' printed. > (2) This is OK! We run one statement at a time As it should be for "single input". > (3) This is NOT OK! Python throws a SyntaxError because we used Py_single_input. Yes, because AFAIK single stands for single statement. There are 2 (assign + expression) > These two requirements are in conflict, because while Py_single_input enables the first, it forbids the second. It is why there is a code module which allows implementation of REPL loops.

> (1) BUT: The value of 'a' is not printed

Isn't this the expected behavior for file input? You need to call print() in order to get 'a' printed.

> (2) This is OK! We run one statement at a time

As it should be for "single input". 

> (3) This is NOT OK! Python throws a SyntaxError because we used Py_single_input.

Yes, because AFAIK single stands for single statement. There are 2 (assign + expression)

> These two requirements are in conflict, because while Py_single_input enables the first, it forbids the second.

It is why there is a code module which allows implementation of REPL loops.

History
Date	User	Action	Args
2019-12-21 08:12:40	BTaskaya	set	recipients: + BTaskaya, vstinner, steveire, nanjekyejoannah
2019-12-21 08:12:40	BTaskaya	set	messageid: <1576915960.42.0.984326631069.issue30905@roundup.psfhosted.org>
2019-12-21 08:12:40	BTaskaya	link	issue30905 messages
2019-12-21 08:12:40	BTaskaya	create