I cant verify seed generation if someone can see what is wrong Question: So i got this function that generates seeds makeseed() and now im trying to make a "verify" seed keep in mind that any seed generated IS Correct so i want it so that the user can input seeds and it’ll check if …
How is the bit length of a result of a bitwise operation for negative numbers calculated? Question: How is the number of value bits in the result determined in the following operations: 5 = -3 & 5 # (1)11 & (0)101 -> (0)101 -3 = -3 | 5 # (1)11 & (0)101 -> (1)11 -8 …
How to replace the independent 1 with 0 in binary number using only bitwise operations? Question: By "independent 1" I mean 1 that has no other 1 next to it ("010" or "10" and "01" at the ends of the num.) If the 1 doesn´t have any 1 next to it, it will change to …
How does python perform bitwise operations to store three values in an int? Question: For example, if I have an int with a length of 32 bits, how do I store value A in the first 16 bits, then store value B in bits 17-24, and value C in bits 25-32? And how can I …
Fast Bitwise Sum in Python Question: Is there an efficient way to calculate sum of bits in each column over array in Python? Example (Python 3.7 and Numpy 1.20.1): Create numpy array with values 0 or 1 import numpy as np array = np.array( [ [1, 0, 1], [1, 1, 1], [0, 0, 1], ] …
What are the value states of read/write in selectors.EVENT_READ | selectors.EVENT_WRITE? Question: In the question Python – non-blocking sockets using selectors the following code is used: events = selectors.EVENT_READ | selectors.EVENT_WRITE The values of event_read or event_write flags are not mentioned nor explained at https://docs.python.org/3/library/selectors.html. Neither is an explanation give in the select() module or …
Getting the position of 1-bits in a python Long object Question: Let’s say I have a very very large python integer, in python 2.7 (though if I need to, I don’t mind switching to python 3). Something bigger than say, 2^100000. What is the fastest way by which I can find the positions of all …
Infinite loop while adding two integers using bitwise operations? Question: I am trying to solve a problem, using python code, which requires me to add two integers without the use of ‘+’ or ‘-‘ operators. I have the following code which works perfectly for two positive numbers: def getSum(self, a, b): while (a & b): …
Logical vs. bitwise operator AND Question: I don’t understand the difference between & and and, even if I read some other questions about it. My code is: f=1 x=1 f==1 & x==1 Out[60]: True f==1 and x==1 Out[61]: True f=1 x=2 f==1 and x==2 Out[64]: True f==1 & x==2 Out[65]: False Why is it the …
Convert to binary and keep leading zeros Question: I’m trying to convert an integer to binary using the bin() function in Python. However, it always removes the leading zeros, which I actually need, such that the result is always 8-bit: Example: bin(1) -> 0b1 # What I would like: bin(1) -> 0b00000001 Is there a …
