unpickle error

[sosman]

After pickling several lists of objects using protocol 2, when I
unpickle I get:
TypeError: ord() expected a character, but string of length 0 found

When I use protocol 0 (ascii) this doesn't occur.

Now it is almost certainly something I have stuffed up but it is not
obvious to me how to debug this kind of problem.

When I mean pickling several lists, I open a file, call dump for each
list of objects then close the file. Similarly for unpickling.

 

[Richie Hindle]

[sosman]

After pickling several lists of objects using protocol 2, when I
unpickle I get:
TypeError: ord() expected a character, but string of length 0 found

When I use protocol 0 (ascii) this doesn't occur.

On Windows you need to open your files in binary mode using open(name, 'rb')
or open(name, 'wb') when reading and writing non-ASCII data. Could that be
the problem?

 

[sosman]

[sosman]

After pickling several lists of objects using protocol 2, when I
unpickle I get:
TypeError: ord() expected a character, but string of length 0 found

When I use protocol 0 (ascii) this doesn't occur.

On Windows you need to open your files in binary mode using open(name, 'rb')
or open(name, 'wb') when reading and writing non-ASCII data. Could that be
the problem?

Doh. Thank you, that appears to have done the trick.