eval(repr(x)) == x

[Oren Tirosh]

On Mon, Jan 28, 2002 at 09:24:17PM -0500, Kragen Sitaker wrote:
> Oren Tirosh <oren-py-l at hishome.net> writes:
> > On Sun, Jan 27, 2002 at 08:33:28AM -0500, François Pinard wrote:
> > > I wonder if `repr' could not be made to produce a string which includes
> > > a non-binary pickle of a complex object, combined with a modification to
> > > the standard Python reading device understanding the convention, and able
> > > to recreate the original from the pickle data in the string.
> > 
> > No need to modify Python for this.  It all depends on you and how you write
> > your object. Just make sure the entire object state can be reconstructed 
> > using the arguments to its constructor and write a __repr__ method that 
> > prints out this constructor call.  As long as your objects are purely
> > hierarchical it can even work recursively.
> 
> That only works for types you write, eh?

It already works for most builtin types (int, str, float, list, tuple, dict).
This was a discussion about how to make it work for user-defined type, too.

The original post of this thread was about whether it should also work for
named objects such as types, classes functions and modules.

	Oren