Well, It means that eval(repr(x)) == x if at all possible.
Basically:
repr('abc') -> 'abc'
str('abc') -> abcYou'll notice that 'abc' is a valid python expression for the string, while abc is not a valid string expression. Andreas On Wed, Jun 15, 2005 at 02:46:04PM +0200, Jan Danielsson wrote: > Sorry, but I Just Don't Get It. I did search the 'net, I did read the > FAQ, but I'm too dumb to understand. > > As far as I can gather, __str__ is just a representation of the > object. For instance: > > class ServerConnection: > def __str__(self): > buf = "Server: " + self.name + "\n" > buf += "Sent bytes: " + str(self.sentBytes) + "\n" > buf += "Recv bytes: " + str(self.recvBytes) + "\n" > return buf > > However, I don't understand what __repr__ should be. There's a phrase > in the documentation which makes it highly confusing for a beginner like > me: "If at all possible, this should look like a valid Python expression > that could be used to recreate an object with the same value (given an > appropriate environment).". What does that mean? Does it mean that I > should return: > > def __str__(self): > buf = "self.name=" + self.name + "\n" > buf += "self.sentBytes=" + str(self.sentBytes) + "\n" > buf += "self.recvBytes=" + str(self.recvBytes) + "\n" > return buf > > ..or is there some other "valid Python expression" format which I > have yet to encounter? > -- > http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
