byte

About to_bytes() method of int type

About to_bytes() method of int type Question: I have a question about to_bytes method of int type in Python. Say, a = 100. Why is a.to_bytes(2, "big") not b"x00x64" but b"x00d"? Seems to me that b"x00d" is not even 2 bytes. Asked By: agongji || Source Answers: b"x00d" means 2 bytes: x00 and d but …

Total answers: 1

How to convert bytes back to list of tuples?

How to convert bytes back to list of tuples? Question: I want to convert back from bytes the list of tuples I had. lst is a list of tuples (x,y), x and y are integer. The code of converting to bytes is: b = b”.join([(x << 16 | (y & 2 ** 16 – 1)).to_bytes(6, …

Total answers: 3

How to convert a string to bytes with hexadecimal representation in Python?

How to convert a string to bytes with hexadecimal representation in Python? Question: I am a very beginner at Python. I have a string that is "TEST00000001" and its length is 12. I want to convert this string to a byte with a hexadecimal representation like this b’x54x45x53x54x30x30x30x30x3030x30x31′. As you can see, the length of …

Total answers: 2

Converting Byte to String and Back Properly in Python3?

Converting Byte to String and Back Properly in Python3? Question: Given a random byte (i.e. not only numbers/characters!), I need to convert it to a string and then back to the inital byte without loosing information. This seems like a basic task, but I ran in to the following problems: Assuming: rnd_bytes = b’wx12x96xb8′ len(rnd_bytes) …

Total answers: 2

Python 3 Concat Single Byte with String Bytes

Python 3 Concat Single Byte with String Bytes Question: I need to concat a single byte with the bytes I get from a parameter string. byte_command = 0x01 socket.send(byte_command + bytes(message, ‘UTF-8’)) but I get this error: socket.send(byte_command + bytes(message, ‘UTF-8’)) TypeError: str() takes at most 1 argument (2 given) I assume this happens because …

Total answers: 2

Convert decimal string representation of an int to "bytes"

Convert decimal string representation of an int to "bytes" Question: I need to convert an int, such as 123456, to bytes in the format b’123456′. I’m not doing an actual conversion to bytes however, I’m just changing the format to look like a byte and be interpreted as one. So I literally need to do …

Total answers: 2

How to translate "bytes" objects into literal strings in pandas Dataframe, Python3.x?

How to translate "bytes" objects into literal strings in pandas Dataframe, Python3.x? Question: I have a Python3.x pandas DataFrame whereby certain columns are strings which as expressed as bytes (like in Python2.x) import pandas as pd df = pd.DataFrame(…) df COLUMN1 …. 0 b’abcde’ …. 1 b’dog’ …. 2 b’cat1′ …. 3 b’bird1′ …. 4 …

Total answers: 5

How to remove those "x00x00"

How to remove those "x00x00" Question: How to remove those “x00x00” in a string ? I have many of those strings (example shown below). I can use re.sub to replace those “x00”. But I am wondering whether there is a better way to do that? Converting between unicode, bytes and string is always confusing. ‘Hellox00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00’. …

Total answers: 7

Convert bytes to int?

Convert bytes to int? Question: I’m currently working on an encryption/decryption program and I need to be able to convert bytes to an integer. I know that: bytes([3]) = b’x03′ Yet I cannot find out how to do the inverse. What am I doing terribly wrong? Asked By: Vladimir Shevyakov || Source Answers: Assuming you’re …

Total answers: 6

TypeError: a bytes-like object is required, not 'str' when writing to a file in Python 3

"TypeError: a bytes-like object is required, not 'str'" when handling file content in Python 3 Question: I’ve very recently migrated to Python 3.5. This code was working properly in Python 2.7: with open(fname, ‘rb’) as f: lines = [x.strip() for x in f.readlines()] for line in lines: tmp = line.strip().lower() if ‘some-pattern’ in tmp: continue …

Total answers: 10