On Thursday, June 10, 2021 at 9:54:15 AM UTC+2 axio...@yahoo.de wrote:
> While working on https://trac.sagemath.org/ticket/31897 Tejasvi (gsoc21) > and I stumbled across the following python behaviour: > > sage: def f(n): > ....: print(len(l)) > ....: > sage: l = []; l.extend(f(n) for n in range(3)) > 0 > 1 > 2 > sage: l = []; l.extend([f(n) for n in range(3)]) > 0 > 0 > 0 > > Is this behaviour we can rely on? I could not find in the python doc, in > any case. > > In the second example, the list [f(n) for n in range(3)] is created before the method extend is called which explains why 0 is printed 3 times. What is the question? Sébastien -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/802c1d06-d169-4194-91f6-5a63d3b70b02n%40googlegroups.com.
