The parsetab.py file created by PLY is supposed to be placed alongside your other source code (hence easily available via import). If giving code away, you would typically include the parsetab.py file along with your code so that it doesn't have to be regenerated by PLY. Therefore, I consider this behavior to be an intended feature, not a bug. I think there is a "picklefile" argument to yacc() that writes the tables to a datafile using pickle instead. That might be another option to consider.
Cheers, Dave On Oct 16, 2010, at 1:06 PM, Bill Hart wrote: > I think I found a work-around. PLY does do some interesting cache > checking, but it does this by 'reading' the parse table file. Under > the hood, this does an 'import', which means that a user needs to > augment their sys.path environment if this file is stored in an out-of- > the-way location!! > > This sounds like a bug to me... > > --Bill > > > On Oct 16, 10:20 am, Bill Hart <[email protected]> wrote: >> PLY is used within the Coopr software, and a Coopr user recently noted >> that the LR table was being repeatedly written. I've taken a look at >> the code, and I don't see any caching logic. >> >> If the write_table option to the yacc() function is 1, then the table >> gets written (this is the default). Otherwise, it looks like it's not >> written. >> >> Is this correct? I think the intent was for the table signature to >> provide a mechanism for detecting when no writing is necessary, but I >> don't see that that logic in the code. > > -- > You received this message because you are subscribed to the Google Groups > "ply-hack" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/ply-hack?hl=en. > -- You received this message because you are subscribed to the Google Groups "ply-hack" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/ply-hack?hl=en.
