質問
オープン時にエラー「メモリエラー」を取得し、500MBを超えるファイルを読み取ります。 500MB未満の場合それは完全に動作します。 私の進行状況バーのMaxValue のサイズを使用しているIM
self.ftp = FTP(hostname)
self.ftp.login(user, password)
self.f = open(self.filename,'rb')
with open(self.filename,'rb') as filein:
self.size = filein.read()
self.size = len(self.size)
. 解決
Don't use the read()
method since it reads the whole file into a string. You should use the os.stat()
function to get the the file metadata, which returns a stat structure with the member st_size
. That's the size in bytes of the file. You don't have to read it all in first.
For sending, also read in and write out in chunks (say 16kB), in a loop.
他のヒント
So, filein.read() actually reads (i.e. downloads) the file and is consuming your memory.
You can instead use
self.size = self.ftp.size(self.filename)
所属していません StackOverflow