hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

AdamISZ

""" THIS CODE IS ONLY EDUCATIONAL - NO
    PART OF IT IS FIT FOR PRODUCTION USE.
    NO, SERIOUSLY, I MEAN IT!!
    
    As for reading it, start with the `__main__`
    section at the bottom and go from there.
    Comments are, deliberately, voluminous.

    If you want to run the example, just:
    (a) install Joinmarket (else see the notes on import)

AdamISZ

import bitcointx as btc
btc.allow_secp256k1_experimental_modules()
btc.select_chain_params("bitcoin/testnet")
from bitcointx.wallet import CCoinKey
from bitcointx.core import COutPoint, CTxIn, CTxOut, CMutableTransaction, CTxInWitness
from bitcointx.core.script import (CScript, OP_CHECKSIGADD, OP_CHECKSIG, OP_NUMEQUAL,
                                   TaprootScriptTree, CScriptWitness)
from bitcointx.wallet import P2TRCoinAddress
from binascii import hexlify, unhexlify