openpyxl + numpy + matplotlib

import openpyxl as opxl
import matplotlib.pyplot as plt
import numpy as np
import re
def main():
    # 엑셀 파일 열기
    wb = opxl.load_workbook("C:\\Users\\sleep\\Desktop\\data.xlsx")

    # 현재 Active Sheet 얻기
    ws = wb.active

    # for Rvalue in ws.rows:
    #     print (Rvalue)

    SheetV = [v for v in ws.rows]
    t_x = list()
    t_y = list()
    for i in range(1, len(SheetV)):
        x, y = SheetV[i][0].value, SheetV[i][1].value
        t_x.append(int(x))
        if "=" in y:
            y = y.replace("=", "")
            k = y.split('*')[0]
            t_y.append(int(ws[k].value)*2)

    plt.plot(t_x, t_y, 'yo')
    plt.show()

if __name__ == "__main__":
    main()