dvf

import hashlib
import json
from time import time


class Blockchain(object):
    def __init__(self):
        self.current_transactions = []
        self.chain = []

turicas

#!/usr/bin/env python
# coding: utf-8

import os
import shlex
from subprocess import Popen, PIPE


def execute_in_virtualenv(virtualenv_name, commands):
    '''Execute Python code in a virtualenv, return its stdout and stderr.'''