feof
- 网络文件结束标志;测试文件是否结束
feof-
The feof command detects whether you have already read to the end of the file and returns True or False .
feof命令将检测您是否已经读到文件的末尾并返回True或False。
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Note that feof also returns False if you 're reading a URL and the socket has timed out because you no longer have data to read .
如果读取的是URL并且套接字由于不再有任何数据可以读取而超时，则feof也将返回False。