Copy>>> import os
>>> "\x00"+os.urandom(4)+"\x00"
'\x00!\xc0zK\x00'
Answer from John La Rooy on Stack OverflowPython documentation
docs.python.org › 3 › library › random.html
random — Generate pseudo-random numbers
February 23, 2026 - Override this method in subclasses to customise the randbytes() behaviour of Random instances.
Top answer 1 of 10
90
Copy>>> import os
>>> "\x00"+os.urandom(4)+"\x00"
'\x00!\xc0zK\x00'
2 of 10
41
An alternative way to obtaining a secure random sequence of bytes could be to use the standard library secrets module, available since Python 3.6.
Example, based on the given question:
Copyimport secrets
b"\x00" + secrets.token_bytes(4) + b"\x00"
More information can be found at: https://docs.python.org/3/library/secrets.html
Videos
Educative
educative.io › answers › what-is-the-randomrandbytes-method-in-python
What is the random.randbytes() method in Python?
The randbytes method of the random module is used to generate bytes of the given size. This method was introduced in Python (version 3.9).
Tutorialspoint
tutorialspoint.com › python › python_random_randbytes_method.htm
Python random.randbytes() Function
The Python random.randbytes() function in Python is used to generate n random bytes. This function is part of the random module, which provides various functions to generate random numbers and sequences.
Interactive Chaos
interactivechaos.com › en › python › function › randomrandbytes
random.randbytes | Interactive Chaos
The random.randbytes function generates random bytes.
DEV Community
dev.to › izaan › generate-random-bytes-of-size-n-in-python-3-9-bm4
Generate random bytes of size n in Python 3.9 - DEV Community
August 14, 2021 - Python version 3.9 introduced the new function, randbytes(n) which returns bytes of size "n".
Bobby Hadz
bobbyhadz.com › blog › python-generate-random-bytes
Generate random bytes or random Hex string in Python | bobbyhadz
April 10, 2024 - Copied!import random random_bytes = random.randbytes(8) print(random_bytes) # 👉️ b'\xb0\x1c\x01:L\x95 \xa3' print(len(random_bytes)) # 👉️ 8 # ------------------------------------------ random_bytes = random.randbytes(16) # 👇️ b'M\x9dh\xfa\xee\x93i\x02\x17\xe2\x13\xa5\x03\xebh\xc8' print(random_bytes) print(len(random_bytes)) # 👉️ 16
GitHub
github.com › python › cpython › blob › main › Lib › random.py
cpython/Lib/random.py at main · python/cpython
randbytes = _inst.randbytes · · · ## ------------------------------------------------------ ## ----------------- test program ----------------------- · def _test_generator(n, func, args): from statistics import stdev, fmean as mean · from time import perf_counter ·
Author python
Twisted
twisted.org › documents › 8.1.0 › api › twisted.python.randbytes.RandomFactory.html
twisted.python.randbytes.RandomFactory : API documentation
Part of twisted.python.randbytes View Source View In Hierarchy
GitHub
github.com › twisted › twisted › blob › twisted-17.1.0 › src › twisted › python › randbytes.py
twisted/src/twisted/python/randbytes.py at twisted-17.1.0 · twisted/twisted
· """ Cryptographically secure random implementation, with fallback on normal random. """ · from __future__ import division, absolute_import · · import warnings, os, random, string · · from twisted.python.compat import _PY3 ·
Author twisted
Python
bugs.python.org › issue40286
Issue 40286: Add randbytes() method to random.Random - Python tracker
This issue tracker has been migrated to GitHub, and is currently read-only. For more information, see the GitHub FAQs in the Python's Developer Guide · This issue has been migrated to GitHub: https://github.com/python/cpython/issues/84466
Learn By Example
learnbyexample.org › python-random-randbytes-method
Python Random randbytes() Method - Learn By Example
April 23, 2024 - The randbytes() method is used to generate a specified number of random bytes.
Linux Tip
linuxscrew.com › home › programming › python › how to generate random numbers and strings in python
How to Generate Random Numbers and Strings in Python
September 20, 2021 - From Python version 3.9, the randbytes() function can be used to generate a series of random bytes of a given length – this can then be used as a randomized string.
Gitlab
gdevops.gitlab.io › tuto_python › versions › 3.9.0 › random › random.html
Python 3.9 Feature Random Bytes Generation
Sign in to GitLab · By signing in you accept the Terms of Use and acknowledge the Privacy Statement and Cookie Policy · Don't have an account yet? Register now · or sign in with · Remember me · Explore Help About GitLab GitLab community forum · English · 日本語 · Gaeilge
GitHub
github.com › twisted › twisted › blob › twisted-21.2.0 › src › twisted › python › randbytes.py
twisted/src/twisted/python/randbytes.py at twisted-21.2.0 · twisted/twisted
# -*- test-case-name: twisted.test.test_randbytes -*-
Author twisted
GitHub
gist.github.com › rusek › c9d07140f61851693dfd
Random bytes generation in Python · GitHub
Random bytes generation in Python · Raw · randbytes.py · This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Gemfury
gemfury.com › hemamaps › twisted
python/randbytes.py · hemamaps / Twisted v16.3.0 - python package | Gemfury
Why Gemfury? Push, build, and install RubyGems npm packages Python packages Maven artifacts PHP packages Go Modules Debian packages RPM packages NuGet packages ... # -*- test-case-name: twisted.test.test_randbytes -*- # Copyright (c) Twisted Matrix Laboratories.
Programming Idioms
programming-idioms.org › idiom › 310 › fill-array-with-random-bytes › 5790 › python
Fill array with random bytes, in Python
Python · import random · a[:] = random.randbytes(len(a)) Doc · Python · import random · a = random.randbytes(N) Doc · Fortran · Go · Java · Pascal · Perl · Perl · Ruby · Rust · use, intrinsic:: iso_fortran_env, only: int8 · real, dimension(100) :: b integer(int8), dimension(100) :: a call random_number(b) a = b*256 - 128 ·
NumPy
numpy.org › doc › stable › reference › random › generated › numpy.random.bytes.html
numpy.random.bytes — NumPy v2.4 Manual
Return random bytes · New code should use the bytes method of a Generator instance instead; please see the Quick start
Runebook.dev
runebook.dev › en › docs › python › library › random › random.Random.randbytes
python - The Right Way to Use randbytes(): When to Switch to the Secrets Module
randbytes() returns a bytes object, which looks like b'\xde\xad\xbe\xef...'. Sometimes you want a random string (like an alphanumeric ID).