lonetwin

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import re
from itertools import chain
from functools import reduce, partial


def apply_substitutions(text, substitutions):
    """Apply an ordered list of string transformations to input text

lonetwin

#!/usr/bin/python
""" tracer.py: Quick and dirty python 'strace'
"""

import os
import os.path
import sys
import linecache
from functools import wraps

lonetwin

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# With nose, this test will (incorrectly) pass
# With nose2, this test will (correctly) fail

import unittest

class TestSomething(unittest.TestCase):

    def validate(self, x, y):

lonetwin

import sys
import pip

from importlib import import_module
from importlib.abc import MetaPathFinder

class PipMetaPathFinder(MetaPathFinder):
    """A importlib.abc.MetaPathFinder to auto-install missing modules using pip
    """
    def find_spec(fullname, path, target=None):

lonetwin

# execute an interactive python shell on a remote machine,
# over ssh, after coping my local pythonrc to that machine
# (my pythonrc available here: https://gist.github.com/lonetwin/5902720)
function rpython {
    DEST='/tmp/.pythonrc.py'
    scp -q $PYTHONSTARTUP $1:$DEST
    ssh -t $1 -- "PYTHONSTARTUP=$DEST python"
    ssh $1 "rm $DEST"
}
# - setup completion for rpython

lonetwin

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Minimal example of writing logs to a dlt-daemon from a python app. The
# message will look like this when printed out using
# "dlt-receive -a localhost":
# 2016/03/10 10:24:42.772153  290716359 016 ECU1 DLTD INTM log info V 1 [ApplicationID 'APPY' registered for PID 29, Description=APPY service]
# 2016/03/10 10:24:42.772178  290716360 017 ECU1 DLTD INTM log info V 1 [ContextID 'APPY' registered for ApplicationID 'APPY', Description=Context for APPY]
# 2016/03/10 10:24:42.772182  290716359 000 ECU1 APPY APPY log info V 1 [This is a log message]
# 2016/03/10 10:24:42.772185  290716360 018 ECU1 DLTD INTM log info V 1 [Unregistered ContextID 'APPY' for ApplicationID 'APPY']
# 2016/03/10 10:24:42.772190  290716360 019 ECU1 DLTD INTM log info V 1 [Unregistered ApplicationID 'APPY']

lonetwin

import logging
import fcntl
from contextlib import contextmanager

@contextmanager
def locked_open(filename, mode='r'):
    """locked_open(filename, mode='r') -> <open file object>
    
       Context manager that on entry opens the path `filename`, using `mode`
       (default: `r`), and applies an advisory write lock on the file which

lonetwin

#!/usr/bin/env python
# -*- coding: utf-8 -*-
def page_category_filter(bid_request, config):
    if config["mode"] == "whitelist":
        return bool(
            bid_request["categories"] & set(config["categories"])
        )
    else:
        return bool(
            config["categories"] and not

lonetwin

#!/usr/bin/env python
# A more detailed explaination will come as a blog post soon, but in brief,
# here is the problem that led to this:
#
# For various reasons we have a requirement to implement an 'sftp' like
# abstraction/interface for a service that we provide. Basically we need to
# present objects in our application as a filesystem accessible over sftp.
#
# The way we have decided to go about this is to replace the 'standard' openssh
# sftp subsystem command entry in /etc/ssh/sshd_config on our servers with our

lonetwin

I like to manage dotfiles without having to mess with silly symlinks or having
to install/configure specific dotfile managament tools. So here's what I did:
 
$ cd ~
$ git init .
$ echo '*' > .gitignore                   # ignore all files by default
$ echo '!.bashrc' >> .gitignore           # ...and then tell git what files not to *not* ignore
$         # ...add other files you may want to track to *not* ignore
$ git add .bashrc                         # now actually add the files to git
$ git add .gitignore                      # add the .gitignore to git