On 05/11/2022 22:11, MRAB wrote:
On 2022-11-05 18:52, cactus wrote:
On Saturday, 5 November 2022 at 16:06:52 UTC, cactus wrote:
I should have quoted the full comprehensions:
all((srt(m, n) in c_np) == (srt(a, b) in c_ap) for (m, a), (n, b)
in combinations(na8, 2))
all( srt(m, n) in c_np == srt(a, b) in c_ap) for (m, a), (n, b)
in combinations(na8, 2))
The comparison operators can be chained, so:
a == b == c
is equivalent to:
(a == b) and (b == c)
except that the common term ('b' in this case) is evaluated only once.
'in' is one of those comparison operators, so:
srt(m, n) in c_np == srt(a, b) in c_ap
is equivalent to:
(srt(m, n) in c_np) and (c_np == srt(a, b)) and (srt(a, b) in c_ap)
except that the common terms ('c_np' and 'srt(a, b)') are evaluated only
once.
Chaining makes most sense with multiple '==' or a series of '<' and/or
'<=' or a series of '>' and/or '>=', as in '1 <= n <= 10'.
Thanks for a most helpful explanation
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