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class A(dict):
    def __new__(cls):
        ret = dict.__new__(cls)
        ret.a = 1
        return ret


class B(A):
    def __new__(cls, a):

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import re
import itertools

t = input('输入四个数：')
nums = list(map(int, re.split('\s+', t)))
div = lambda x, y : x // y
signs = [int.__add__, int.__sub__, int.__mul__,  div]
signs_txt = {signs[0]: '+', signs[1]: '-', signs[2]: '*', signs[3]: '/'}
signs_to_txt = lambda x: signs_txt[x]

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# 基于 peewee，需要传入 model 类和查询条件


def parse_query(sheet_model, statements):
    """
    statements:
    ['and',
        ['==', 'col1', val1],
        ['!=', 'col2', val2],
        ['and',

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import struct
from PIL import Image

fp = open('myshot.raw', 'rb')
size = struct.unpack('II', fp.read(8))
img = Image.frombytes('RGBA', size, fp.read())
img.save('out.bmp')

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from PIL import Image, ImageFont, ImageDraw

text = '立行跃击'
font = ImageFont.truetype('../font/SourceHanSansCN-Regular.otf', 80)

for i in text:
    img = Image.new('RGBA', (100, 100))
    brush = ImageDraw.Draw(img)
    brush.text((10,0), i, fill='#000', font=font)

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export function getSvgPositionFromToEl(stage, el) {
    var point = stage.createSVGPoint();
    let matrix = stage.getScreenCTM().inverse().multiply(el.getScreenCTM());
    return point.matrixTransform(matrix);
}

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import os
import sys


def run():
    head, *data = input('> ').strip().split(' ')
    if head in ['ls', 'dir']:
        path = data[0] if len(data) else ''
        for i in os.listdir(path):
            print(i)

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/**
Copyright (c) 2018 fy

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

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package main

import (
	"context"
	"errors"
	"fmt"
	"io"
	"log"
	"net/rpc"
	"net/rpc/jsonrpc"

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# coding: utf-8
# 更新于2017/10/02，python3测试通过

import re
import requests

# 领取 X 铜币
# 每日登录奖励已领取

base_headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.57 Safari/537.36 OPR/40.0.2308.15 (Edition beta)', 'Referer': 'https://www.v2ex.com/signin', 'Origin': 'https://www.v2ex.com'}