Advertisements I have a string from a database request as follows: result = "b’\x00\x00\x00\x00\x07\x80\x00\x03’" type(result) -> <class ‘str’> How do I convert it to bytes? It should be like this: a = b’\x00\x00\x00\x00\x07\x80\x00\x03′ type(a) -> <class ‘bytes’> >Solution : From what I understood (I have a terrible understanding of english): You can use the eval()… Read More How to convert bytes string to bytes

Advertisements I’m trying to compare a byte array with a hex number, having a surprisingly hard time. #include <stdio.h> int main() { int bytes[4] = { 0x7c, 0x71, 0xde, 0xbb }; int number = 0x7c71debb; printf("%u\n", number); printf("%u\n", (int)*bytes); return 0; } I’m getting: 2087837371 124 I did some reading and I tried using memcpy… Read More How to convert and compare byte array to int

Advertisements I’ve written a script that captures three data elements from a bus every 10 seconds and writes them to a csv file with date and time. The elements are flow_temp, return_temp and flame. The first two are floating point numbers and flame is bytes. The possible values of flame are ‘on’ and ‘off’ and… Read More Python formatting bytes in csv writer

Advertisements I am trying to remove a byte (\x00\x81) from a byte string sByte. sByte = b’\x00\x81308 921 q53 246 133 137 022 1 0 1 1 1 130 C13 330 0000000199 04002201\n’ I am expecting to have as a result the following: sByte = b’308 921 q53 246 133 137 022 1 0 1… Read More How to remove some bytes from a byte string?

Advertisements My issue is that when I regex a string variable it works, but when I convert a byte object to string and then regex that string it returns an empty list, here is my code. simple.cpp: #include <iostream> using namespace std; string a = "ABC"; int main() { cout << "Hello World!"; return 0;… Read More Why can't I regex a converted bytes to string?

Advertisements This code works perfectly: b’\x4a’ + b’\x20′ b’J ‘ But this doesn’t: sum([b’\x4a’, b’\x20′]) TypeError: unsupported operand type(s) for +: ‘int’ and ‘bytes’ Why? How to concatenate many bytes elements? >Solution : You can use join instead: b”.join([b’\x4a’, b’\x20′]) Output: b’J ‘

Advertisements Is putting in binary as a value possible? I want something like char test = 00101011 and it will become 43. I know this is possible by making a function that converts binary to decimal (which can be inputted) but thats not direct and Im pretty sure it takes time. >Solution : You need… Read More Is directly putting in binary possible C++