如何在Revit Python Shell中读取excel文件时将“string”转换为“BuiltInCategory”

import clr
import sys
import os
import pandas as pd

clr.AddReference('RevitAPI')
clr.AddReference('RevitAPIUI')
from Autodesk.Revit.DB import *

def convert_string_to_built_in_category(category_string):
    category_enum = System.Enum.GetValues(BuiltInCategory)
    for category in category_enum:
        if category.ToString() == category_string:
            return category
    return None

def read_excel_file(file_path):
    excel_data = pd.read_excel(file_path)
    for index, row in excel_data.iterrows():
        category_string = row['Category']
        built_in_category = convert_string_to_built_in_category(category_string)
        if built_in_category is not None:
            # 执行相应的操作，如创建元素等
            pass
        else:
            # 处理无效的类别字符串
            pass

file_path = 'path/to/excel/file.xlsx'
read_excel_file(file_path)