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