February 2006
Intermediate to advanced
648 pages
14h 53m
English
Content preview from Python: Essential Reference, Third Edition
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Operations on Numbers
The following operations can be applied to all numeric types:
| Operation | Description |
|---|---|
| x + y | Addition |
| x - y | Subtraction |
| x * y | Multiplication |
| x / y | Division |
| x // y | Truncating division |
| x ** y | Power (xy) |
| x % y | Modulo (x mod y) |
| –x | Unary minus |
| +x | Unary plus |
The truncating division operator (also known as floor division) truncates the result to an integer and works with both integers and floating-point numbers. As of this writing, the true division operator (/) also truncates the result to an integer if the operands are integers. Therefore, 7/4 is 1, not 1.75. However, this behavior is scheduled to change in a future version of Python, so you will need to be careful. The modulo operator returns the remainder of the division x // y. For example, 7 % ...
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