Python’s x % y returns a result with the sign of y instead, and may not be exactly computable for float arguments. For example, fmod(-1e-100, 1e100) is -1e-100, but the result of Python’s -1e-100 % 1e100 is 1e100-1e-100, which cannot be represented exactly as a float, and rounds to the surprising 1e100.

Jun 14, 2024 · On Python 3 the calculation yields 6.75; this is because the / does a true division, not integer division like (by default) on Python 2. On Python 2 1 / 4 gives 0, as the result is rounded down. The integer division can be done on Python 3 too, with // operator, thus to get the 7 as a result, you can execute: 3 + 2 + 1 - 5 + 4 % 2 - 1 // 4 + 6

Feb 8, 2013 · This is pretty much fundamental to the definition of modulus, and it's wrong in Python, and just about every other programming language. But Python 3 comes to the rescue there. Most people who know about // know that it's how you do "integer division" between integers, but don't realize that it's how you do modulus-compatible division between ...

Jul 8, 2013 · The Modulus is the remainder of the euclidean division of one number by another. % is called the modulo operation. For instance, 9 divided by 4 equals 2 but it remains 1. Here, 9 / 4 = 2 and 9 % 4 = 1. In your example: 5 divided by 7 gives 0 but it remains 5 (5 % 7 == 5). Calculation. The modulo operation can be calculated using this equation:

Nov 8, 2016 · The modulus of 2 over 2 is zero: >>> 2 % 2 0 So 2 % 2 produces 0, which is a false value, and thus the if statement doesn't match. On the other hand, the modulus of 3 over to is one: >>> 3 % 2 1 1 is a non-zero integer, so considered true. In other words, the if i%2: test matches odd numbers, not even. There are 3 odd numbers in your list.

Oct 7, 2010 · IMHO, this is an extremely common use case. And as you probably know, Python already implements this indexing convention for arrays: >>> a = [3, 5, 7] >>> a[-1] 7 Whereas not only e.g. Java does not, but 'fixing it' to the Python convention requires the more complicated formula mentioned above.

May 9, 2019 · It is used to calculate the remainder of an integer division, like 5 % 3 which yields 2. It returns the remainder for all numeric operands on the left-hand-side (that is, if the first operands is an integer, fraction, float, Decimal numbers.

Aug 23, 2017 · Note that the actual idea of for in Python is to iterate over the buffer contents itself, not and index that will lead to its contents. So, the Python standard library includes a ready made circular buffer object already that always have its indexes normalized to 0 and (len - 1) - just import deque from the collections module.

Apr 25, 2017 · Whether magics are available on a kernel is a decision that is made by the kernel developer on a per-kernel basis. To work properly, Magics must use a syntax element which is not valid in the underlying language. For example, the IPython kernel uses the % syntax element for magics as % is not a valid unary operator in Python. While, the syntax ...

That's because Python's % performs a true modulus, which returns values on the range [0, divisor) and pairs well with floored division (towards negative infinity). C languages use the % operator for remainder operations which returns values on the range (-divisor, divisor) and pairs well with standard division (towards zero). –