csv的writerow写入的文件会有空行

在打开要写入的文件的时候，末尾加上一句newline=”就够了

with open("numEnname.csv","a+",newline='') as csvfile:
        writer = csv.writer(csvfile,dialect='excel')

        #先写入columns_name
        #写入多行用writerows
        writer.writerow([str1,str2,str3,str4,str5,str6,str7,str8,str9,str10,i,"F"])