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import pygame
import time
import random

pygame.init()

white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)

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"""

class BaseWorker:
    def __int__(self):
        self.counter = 0

    def work(self):
        self.counter += 1

    def get_counter(self):

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import asyncio
import time
import traceback


class Awaitable:
    def __init__(self, block_fns):
        self.fns: list = block_fns

    def __await__(self, *args, **kwargs):

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import deque

graph2 = {
    'Dov Aharon': ['Debbie Ben Zaken', 'Yaron Baberman'],
    'Debbie Ben Zaken': [],
    'Yaron Baberman': ['Dan Cohen'],
    'Dan Cohen': ['David Dukovsky', 'Didi Eshkol'],
    'David Dukovsky': [], 'Didi Eshkol': []
}

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class ChessBoard:
    size: int = 7


class ChessPiece:

    def __init__(self):
        self.dead = False

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from contextlib import ExitStack
from dataclasses import dataclass
import json


@dataclass
class Node:
    n_id: int
    n_type: str
    n_text: str

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import numpy as np
def is_solved(board):
    
    grid = np.array(board)
    
    row0 = grid[0]
    row1 = grid[1]
    row2 = grid[2]
    col0 = grid[:, 0]
    col1 = grid[:, 1]

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class MyClassQuerySet(models.query.QuerySet):
    def get(self, **kwargs):
        print('hello world')
        try:
            return super().get(**kwargs)
        except:
            return None


class MyClassManager(models.Manager.from_queryset(MyClassQuerySet)):

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# uncommited file to HEAD
git diff <path>

# uncommited file to before last commit
git diff HEAD^ -- <path>

#last commit to before last commit
git diff HEAD^ HEAD -- <path>

#difference between HEAD and n-th grandparent

safhac

Install RabbitMQ on CentOS 7

sudo yum -y install epel-release
sudo yum -y update

Install Erlang

Download repository