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
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