Skip to content

Instantly share code, notes, and snippets.

View elehcim's full-sized avatar
🔭

Michele Mastropietro elehcim

🔭
View GitHub Profile
@gioper86
gioper86 / cassandra_to_pandas.py
Last active October 9, 2024 08:18
Get a Pandas DataFrame from a Cassandra query
from cassandra.cluster import Cluster
from cassandra.auth import PlainTextAuthProvider
import pandas as pd
def pandas_factory(colnames, rows):
return pd.DataFrame(rows, columns=colnames)
cluster = Cluster(
contact_points=['127.0.0.1'],
auth_provider = PlainTextAuthProvider(username='cassandra', password='cassandra')
@subfuzion
subfuzion / curl.md
Last active March 23, 2026 03:03
curl POST examples

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

#!/bin/sh
jq -r 'def banner: "\(.) " + (28-(.|length))*"-";
("Non-cell info" | banner), del(.cells), "",
(.cells[] | ("\(.cell_type) cell" | banner),
"\(.source|add)",
if ($show_output == "1") then
"",
( select(.cell_type=="code" and (.outputs|length)>0) |
("output" | banner),
(.outputs[] |
@jakevdp
jakevdp / discrete_cmap.py
Last active June 1, 2025 11:15
Small utility to create a discrete matplotlib colormap
# By Jake VanderPlas
# License: BSD-style
import matplotlib.pyplot as plt
import numpy as np
def discrete_cmap(N, base_cmap=None):
"""Create an N-bin discrete colormap from the specified input map"""
@takluyver
takluyver / README.md
Created September 6, 2014 21:44
Flatten notebooks for git diff

Copy nbflatten.py to somewhere on $PATH. Then, in the root of a git repository, run these commands:

echo "*.ipynb diff=ipynb" >> .gitattributes 
git config diff.ipynb.textconv nbflatten.py

When you change a notebook and run git diff, you'll see the diff of flattened, simplified notebooks, rather than the full JSON. This does lose some information (metadata, non-text output), but it makes it easier to see simple changes in the notebook.

This doesn't help with merging conflicting changes in notebooks. For that, see nbdiff.org.

@helgee
helgee / doptest.f90
Last active December 31, 2015 17:19
program doptest
implicit none
double precision :: x
double precision :: xend
double precision, dimension(1) :: rtol
double precision, dimension(1) :: atol
double precision, dimension(6) :: y
double precision, dimension(6) :: y1
@staticfloat
staticfloat / debugging.md
Last active February 24, 2017 03:11
Julia Debugging Procedures

Julia Debugging Procedures

So you managed to break Julia. Congratulations! Collected here are some general procedures you can undergo for common symptoms encountered when something goes awry. Including the information from these debugging steps can greatly help the maintainers when tracking down a segfault or trying to figure out why your script is running slower than expected.

If you've been directed to this page, find the symptom that best matches what you're experiencing and follow the instructions to generate the debugging information requested. Table of symptoms:

anonymous
anonymous / Makefile
Created May 26, 2013 18:55
Laplacian operator in Julia and C.
all : laplace.so
laplace.so : laplace.h laplace.c
gcc -O3 -fopenmp -fPIC -c laplace.c
gcc -O3 -fopenmp -fPIC -shared -o liblaplace.so laplace.o
rm -f laplace.o
clean:
rm -f laplace.so
@marazmiki
marazmiki / daemon.py
Created September 4, 2012 07:53
Python daemon example
#!/usr/bin/env python
# coding: utf-8
import argparse
import os
import sys
import time
import atexit
import logging
import signal