What is associativity in Python and why is it important?
Associativity in Python refers to the order in which operators of the same precedence are evaluated. It's important because it affects how expressions are computed.
Can you give me an example of associativity with operators?
Sure! For example, in the expression a - b + c
, both -
and +
have the same precedence and are left associative, so it's evaluated as `(a - b) + c.
What about right associative operators?
In Python, the only right associative operator is the exponentiation operator **
. For example, 2 ** 3 ** 2
is evaluated as 2 ** (3 ** 2)
.
How does this affect complex expressions?
It can significantly change the result! Understanding associativity helps avoid unexpected outcomes in complex calculations.
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