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@Horace89
Horace89 / stegano_lsb_decode.py
Created July 2, 2025 09:22 — forked from stephanie-w/stegano_lsb_decode.py
from PIL import Image
import numpy as np
with Image.open("cover-secret.png") as img:
width, height = img.size
data = np.array(img)
data = np.reshape(data, width*height*3)
# extract lsb
data = data & 1
@Horace89
Horace89 / stegano_lsb_encode.py
Created July 2, 2025 09:21 — forked from stephanie-w/stegano_lsb_encode.py
import numpy as np
from PIL import Image
message = "Hello World!"
# Encode the message in a serie of 8-bit values
b_message = ''.join(["{:08b}".format(ord(x)) for x in message ])
b_message = [int(x) for x in b_message]
b_message_lenght = len(b_message)
@Horace89
Horace89 / pandas_image.ipynb
Created June 12, 2024 07:55 — forked from stas-sl/pandas_image.ipynb
Displaying inline images in pandas DataFrame
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@Horace89
Horace89 / ladder.md
Created January 17, 2024 14:40 — forked from jamtur01/ladder.md
Kickstarter Engineering Ladder
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Horace89 / Pipfile
Created January 11, 2024 16:22 — forked from tribals/Pipfile
Understanding SQL row locking - `SELECT FOR UPDATE`
[[source]]
url = "https://pypi.python.org/simple"
verify_ssl = true
name = "pypi"
[packages]
SQLAlchemy = "*"
"psycopg2-binary" = "*"
[dev-packages]
@Horace89
Horace89 / bloomfilter.py
Created September 20, 2021 09:12 — forked from mburst/bloomfilter.py
Code for creating and testing a simple bloom filter - http://maxburstein.com/blog/creating-a-simple-bloom-filter/
from bitarray import bitarray
import mmh3
class BloomFilter:
def __init__(self, size, hash_count):
self.size = size
self.hash_count = hash_count
self.bit_array = bitarray(size)
self.bit_array.setall(0)
@Horace89
Horace89 / raspi-setup-gitea.md
Created March 7, 2018 09:36 — forked from mirhec/raspi-setup-gitea.md
Installing Gitea on Raspberry Pi with nginx, SSL and automatic backups

Setup Gitea on Raspberry Pi (3)

These instructions are based on this article: https://www.alexruf.net/2016/05/23/setup-gogs-git-service.html.

Setup Raspberry Pi with minimal Raspbian image. You need to connect to the HDMI port and set the following:

sudo raspi-config

There you need to enable the SSH server and you should change the hostname.

@Horace89
Horace89 / image-downloader2.py
Created February 5, 2018 07:55 — forked from davesnowdon/image-downloader2.py
Rewrite of the python image downloading code from https://www.pyimagesearch.com/2017/12/04/how-to-create-a-deep-learning-dataset-using-google-images/ which does not leave gaps in the numbering, allows arbitrary starting numbers and uses generators to make the code a bit more readable
from imutils import paths
import argparse
import requests
import cv2
import os
import numpy as np
# Adapted from https://www.pyimagesearch.com/2017/12/04/how-to-create-a-deep-learning-dataset-using-google-images/
# fixes the following issues with the original:
# 1 - files are always saved as .jpg even if they are not in JPEG format
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Horace89 / run_scheduled.py
Created November 22, 2017 15:16 — forked from numberoverzero/run_scheduled.py
00.async.periodic.rst
import asyncio
import functools
import json
import secrets
import aiohttp
from concurrent.futures import ALL_COMPLETED
@Horace89
Horace89 / hash_djb2.py
Created November 14, 2017 15:43 — forked from mengzhuo/hash_djb2.py
DJB2 Hash in Python
#!/usr/bin/env python
# encoding: utf-8
def hash_djb2(s):
hash = 5381
for x in s:
hash = (( hash << 5) + hash) + ord(x)
return hash & 0xFFFFFFFF