[EMAIL PROTECTED] wrote:
Tuples are defined with regards to parentheses ()'s as everyone knows.
This causes confusion for 1 item tuples since (5) can be interpreted as a tuple OR as the number 5 in a mathematical expression such as x = (5) * (4+6).
No, (5) is always the number 5. To make a one-element tuple, use (5,).
Wouldn't it have been better to define tuples with <>'s or {}'s or something else to avoid this confusion??
Perhaps ()'s are a good idea for some other reason I don't know?
Actually, for non-empty tuples, the parentheses aren't really necessary, unless code is ambiguous.
>>> x = 1, 2, 3 >>> x (1, 2, 3) >>> y = 5, >>> y (5,)
but:
>>> print 8, 9 # not a tuple 8 9 >>> print (8, 9) (8, 9)
HTH,
-- Hans Nowak http://zephyrfalcon.org/
-- http://mail.python.org/mailman/listinfo/python-list
