试图在openpyxl中保存工作簿时出现语法错误

我正在尝试使用openpyxl将概率写入excel文件。由于某种原因,我在试图保存工作簿时遇到语法错误。请帮忙。

import openpyxl
from openpyxl import Workbook
import math

wb = openpyxl.Workbook()
sheet = wb.active

for m in range(1,50):
    for n in range(1,50):
        firstTo1 = m
        firstTo2 = n
        maxPoints = (2 * firstTo1 - 1) * (2 * firstTo2 - 1)
        maxPoints1 = 2 * firstTo1 - 1
        maxPoints2 = 2 * firstTo2 - 1
        probSum1 = 0.0
        tempProb1 = 0.0
        probSum2 = 0.0
        tempProb2 = 0.0
        winDec = 0.55
        r = firstTo1
        for y in range(firstTo1, maxPoints1 + 1):
            tempProb1 = (math.factorial(y-1) / (math.factorial((y-1)-(r-1)) * math.factorial(r-1))) * (winDec**r) * ((1-winDec)**(y-r))
            probSum1 += tempProb1
        r = firstTo2
        for y in range(firstTo2, maxPoints2 + 1):
            tempProb2 = (math.factorial(y-1) / (math.factorial((y-1)-(r-1)) * math.factorial(r-1))) * (probSum1**r) * ((1-probSum1)**(y-r))
            probSum2 += tempProb2           
        c = sheet.cell(row = n+2, column = m+2)
        c.value = probSum2
        
wb.save('CapstoneData.xlsx')

运行此代码块会出现以下错误:

File "<stdin>", line 23
    wb.save('CapstoneData.xlsx')
    ^^
SyntaxError: invalid syntax

因为在保存工作簿之前没有错误,所以我不太明白错误来自何处。我已经验证了我计算的有效性,只需要将它们写入Excel。谢谢你的帮助!