File reading using delimiters

[DavidW Blaschke]

As posted in the other reply, read all of the data at
once and then parse it.  If the file is too large, you
can read it one byte at a time until you find the
delimiter with file.read( 1 ).  Don't know how that
will affect performance though.

> --- In python-list at yahoogroups.com, Peter Hansen
> <peter at e...> wrote:
> > Kylotan wrote:
> > > 
> > > All the examples of reading files in Python seem
> to concern 
> reading a
> > > line at a time. But this is not much good to me
> as I want to be 
> able
> > > to read up to arbitrary delimiters without
> worrying about how many
> > > lines I'm spanning. With my rudimentary Python
> knowledge I'm 
> having to
> > > read in multiple lines, concatenate them, search
> for the 
> delimiter,
> > > split the result if necessary, and carry forward
> whatever was 
> after
> > > the delimiter to the next operation. Is there a
> better way of 
> reading
> > > until a certain character is encountered, and no
> more?
> > 
> > You could always avoid readline() and use just
> read() to get either
> > all the data (for files under a few tens of
> megabytes) or read(x) 
> > where x is some block-size, for larger files. 
> Without more 
> information
> > about the nature of the files and the type of
> scanning, I can't
> > help more.
> > 
> > -Peter
> > -- 
> >
> http://mail.python.org/mailman/listinfo/python-list
> 


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