Alexander Eisenhuth <newsuser <at> stacom-software.de> writes: > File "C:\Python25\lib\pickle.py", line 954, in load_float > self.append(float(self.readline()[:-1])) > ValueError: invalid literal for float(): -1.#IND > > - I'm not sure what -1.#IND means. Can somebody assist?
It's the Windows way of representing a NaN (not a number). A NaN is typically what you get when you try to perform an invalid floating-point operation, like taking the square root of a negative number, or dividing 0.0 by 0.0. Some people also use NaNs to represent uninitialized values, or as placeholders for missing data. > - As pickle write the data I'm a bit confused, that is can't > be unpickled it. Is that a bug or a feature? Well, it's certainly not ideal. It shouldn't be a problem in Python 2.6 or 2.7, though; unfortunately, Python 2.5 is no longer receiving bugfixes, so it's not going to change there. > BTW: I'm tied to version 2.5 of python Have you tried using pickle protocol 1 or 2, instead of pickle protocol 0? That may well solve your problem. (Those protocols write out the binary form of a float directly, instead of reading and writing a string representation.) -- Mark -- http://mail.python.org/mailman/listinfo/python-list
