Hi, > a, b = b, a +b
> a = b = 1 > b = a + b = 1 + 1 = 2 Your issue is that you interpret the assignment wrong. You seem to think that it assigns b to a and THEN a+b to b, which is not the case. The right side of the assignment creates a tuple, and the left side unpacks it. It is the same as: t = (b, a+b) a = t[0] b = t[1] You see that a has not been assigned yet when the second part is calculated. Cheers, Nik -- * mirabilos is handling my post-1990 smartphone * <mirabilos> Aaah, it vibrates! Wherefore art thou, demonic device?? PGP-Fingerprint: 3C9D 54A4 7575 C026 FB17 FD26 B79A 3C16 A0C4 F296
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