|Python Language Reference Manual|
by Guido van Rossum and Fred L. Drake, Jr.
Paperback (6"x9"), 120 pages
RRP £12.95 ($19.95)
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5.12 Expression lists
- [ "," ]
An expression list containing at least one comma yields a tuple. The length of the tuple is the number of expressions in the list. The expressions are evaluated from left to right.
The trailing comma is required only to create a single tuple (a.k.a. a
singleton); it is optional in all other cases. A single
expression without a trailing comma doesn't create a
tuple, but rather yields the value of that expression.
(To create an empty tuple, use an empty pair of parentheses:
|ISBN 0954161785||Python Language Reference Manual||See the print edition|