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Evaluation of Expressions
How expressions are evaluated in Python?
✍: FYIcenter.com
Expressions are evaluated in Python based on precedence of each operation list below:
Operator Description -------- ----------- (expressions...), [expressions...], {key: value...}, {expressions...} Binding or tuple display, list display, dictionary display, set display x[index], x[index:index], x(arguments...), x.attribute Subscription, slicing, call, attribute reference await x Await expression ** Exponentiation [6] +x, -x, ~x Positive, negative, bitwise NOT *, @, /, //, % Multiplication, matrix multiplication division, remainder [5] +, - Addition and subtraction <<, >> Shifts & Bitwise AND ^ Bitwise XOR | Bitwise OR in, not in, is, is not, <, <=, >, >=, !=, == Comparisons, including membership tests and identity tests not x Boolean NOT and Boolean AND or Boolean OR if – else Conditional expression lambda Lambda expression
The (expression) has the highest precedence, so it will be evaluated first.
For operations of the same precedence, they will be evaluated from left to right.
For example, the following two expressions are evaluated with the same order and producing the same result:
>>> 2 * 3 + 4 10 >>> (2 * 3) + 4 10
2018-03-13, 1310🔥, 0💬
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