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# -*- encoding: utf-8 -*-
import tkinter as tk
from tkinter import *
import random
import numpy as np
FITT_SAVE = {}
FITT_LIST = []
global Canvas2 # 用于显示函数的画布
Img1 = None # 绘制的dot.png图像
Img2 = None # 绘制的line.png图像
Xian_index = 0 # 当前选择的函数编号
Quadrant = 0 # 当前选择的象限信息0为四象限，1为一象限
MAXV = 1000 # 最大值
INDEX = 5 # 拟合函数索引
Out = '' # 拟合输出信息
LOW = -MAXV # 坐标轴显示上界
HIGH = MAXV # 坐标轴显示下界
MAGNIDICATION = 1.0 # 放大倍数
SampleData = None # 样本数据
CurveData = None # 拟合数据
set_img1 = None
set_img2 = None
global Q_root,F_root
global root_window
global label1,label2,label3
