Python operators

Arithmetic to walrus — every operator with its exact semantics. Entries with a LIVE pill have an editable in-browser demo.

Numbers in, numbers out — plus the true/floor division split and Python’s divisor-signed modulo.

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+
a + b
Addition — and sequence concatenation.
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//
a // b
Floor division — rounds toward negative infinity, not zero.
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%
a % b
Modulo — the remainder, with its sign following the divisor.
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*
a * b
Multiplication — and sequence repetition.
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**
a ** b
Exponentiation — right-associative, and ^ is NOT this.
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-
a - b
Subtraction — and set difference.
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/
a / b
True division — always returns a float, even for ints.