以下程序的输出结果是: fo=open(“textcsv”,‘w’) x=[[90,87,93],[87,90,89],[78,98,97]] b=[] forainx: foraaina: b.append(str(aa)) fo.write(","join(b)) fo.close()
A. [90,87,93,87,90,89,78,98,97]
B. 90,87,9387,90,8978,98,97
C. [[90,87,93],[87,90,89],[78,98,97]]
D. 90,87,93,87,90,89,78,98,97
文件dattxt里的内容如下: QQ&Wechat Google&Baidu 以下程序的输出结果是: fo=open(“tettxt”,‘r’) fo.seek(2) print(foread(8)) fo.close()
A. Wechat
B. &WechatG
C. WechatGo
D. &Wechat
以下程序输出到文件textcsv里的结果是: fo=open(“textcsv”,‘w’) x=[90,87,93] fo.write(","join(str(x))) fo.close()
A. [90,87,93]
B. 90,87,93
C. ,9,0,,8,7,,9,3,
D. [,9,0,,8,7,,9,3,]