python 合并json

import json
import pandas as pd
#for i in range(800):
f1=open('.\\'+str(0)+'.txt', "r")
data1 = f1.read()

dic_str2 = json.loads(data1)

for i in range(1,802):
f=open('.\\'+str(i)+'.txt', "r")
data2 = f.read()
print(i)
dic_str1=json.loads(data2)
f.close
dic_str2["icons"].extend(dic_str1["icons"])
#f2=open('.\\564654654941.txt', "a+")
df = pd.DataFrame(dic_str2["icons"])
#f2.write(json.dumps(dic_str2))
#f2.close
f1.close
# 将DataFrame导出为Excel文件
df.to_excel("output123.xlsx", index=False)