Why is that However, Moreover, It seems, that first -5 is converted to 2’s compliment then operation is performed. Then, in case of ‘&’ output is printed/interpreted as such, but for | output is converted back to signed magnitude representation. Why is there such an asymmetry? Answer -5 in binary (two’s complement) is …111111111011. Python can handle arbitrary-precision integers and
Tag: binary
Loading the binary data to a NumPy array
I am having trouble reading the binary file. I have a NumPy array as, I wrote this array to a file in binary format. Now, I am unable to get back the data from the saved binary file. I tried using numpy.fromfile() but it didn’t work out for me. When I printed the data I got [0.00000000e+00 2.19335211e-13 8.33400000e+04 …
How to create a file object from a zipfile?
I want to create a file object from a file that is inside a zip. I don’t wanna extract that file. Actually I wanna use seek method on a file that is inside a zip. My code: But I can’t use seek method on it. I wanna make it like this but without extracting the file: Answer The documentation says
How to change binary value to an array with individual states
I have a question. How can I import value like this: to an array like this: and vice versa? Answer np.binary_repr function turn integers into binary representation string, so you could do: Output: Reverse direction (as requested by @sai): Output: Explanation: I build list with desceding powers of 2 (in this case [8,4,2,1]) using list comprehension then multiply arr (i.e.
How to decode binary content to original string content in python?
I have a string which I need to encode into binary. It is very important that I get a value string like ‘11010011100…’, because later I need to insert it into the lowest bit of pixels of a gray scale image. (Basically I am hiding a message inside an image.) I am on windows 10, using python 3.6.8. Following this
Python finding numbers from a list that satisfy a specific condition [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about programming within the scope defined in the help center. Closed 2 years ago. Locked. There are disputes about this question’s content being resolved at this time. It is not currently accepting new answers or interactions. Good evening,
How to convert from decimal to a binary string?
The goal of this part of the lab is to motivate a right-to-left conversion of decimal numbers into binary form. Thus, you will end up writing a function numToBinary(anInteger) that works as follows: The code I have is: But this returns the string from left to right. Can anyone help me find a way to go from the left to
Fast way of counting non-zero bits in positive integer
I need a fast way to count the number of bits in an integer in python. My current solution is but I am wondering if there is any faster way of doing this? PS: (i am representing a big 2D binary array as a single list of numbers and doing bitwise operations, and that brings the time down from hours
Convert IP address string to binary in Python
As part of a larger application, I am trying to convert an IP address to binary. Purpose being to later calculate the broadcast address for Wake on LAN traffic. I am assuming that there is a much more efficient way to do this then the way I am thinking. Which is breaking up the IP address by octet, adding 0’s