"Sara Khalatbari" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
> In a code, I'm opening a file to read. Like : > lines = open(filename).readlines() > & I'm never closing it. > I'm not writing in that file, I just read it. Since you do not save a reference to the file object, it is eligible for deletion (which causes file closure). This will happen immediately in CPython, maybe sometime before the program exits in Jython, and certainly when the program exits. > Will it cause any problems if you open a file to read > & never close it? If you keep a file open either with a reference or by use of Jython, other processes that want to use the file can have a problem. If you try to keep more files open the the operating system allows, the next open() call will fail. But for typical programs in typical system usage, you should not have a problem. Many do the same as you. Others think it bad programming. Take your pick. Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
