In <[EMAIL PROTECTED]>, Bob Smith wrote: > Are these the same: > > 1. f_size = os.path.getsize(file_name) > > 2. fp1 = file(file_name, 'r') > data = fp1.readlines() > last_byte = fp1.tell() > > I always get the same value when doing 1. or 2. Is there a reason I > should do both? When reading to the end of a file, won't tell() be just > as accurate as os.path.getsize()?
You don't always get the same value, even on systems where `tell()` returns a byte position. You need the rights to read the file in case 2. >>> import os >>> os.path.getsize('/etc/shadow') 612L >>> f = open('/etc/shadow', 'r') Traceback (most recent call last): File "<stdin>", line 1, in ? IOError: [Errno 13] Permission denied: '/etc/shadow' Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list