stdio EOF ?

Jacek Generowicz jacek.generowicz at cern.ch
Tue Aug 13 15:21:12 CEST 2002


Duncan Booth <duncan at NOSPAMrcp.co.uk> writes:

> Jacek Generowicz <jacek.generowicz at cern.ch> wrote in 
> news:tyfd6sn85mt.fsf at pcitapi22.cern.ch:
> 
> >> The standard idiom for this is:
> >> 
> >>      while 1:
> >>         line = file.readline()
> >>         if not line:
> >>            break
> >>         ...
> >> 
> >> The .readline method of a file object returns a complete line (including
> >> the trailing newline), or an empty string in the case of EOF.
> > 
> > ... unfortunately empty lines are meaningful in the relevant context
> > (separation of datasets); an empty line has a meaning different from
> > that of EOF (no more datasets after this one).
> > 
> 
> I think you misunderstood the bit about empty lines.

You're right ...

> The when the file contains a line that is otherwise blank, the value
> returned is a string containing the newline character.

I forgot about the newline.

All is clear now.

Thanks,



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