I'm experiencing strange errors both with pickle and cPickle in the
below code:
import cPickle as pickle
#import pickle
from string import ascii_uppercase
from string import ascii_lowercase
def createData():
d1 = list("Something's rotten")
d2 = tuple('in the state of Denmark')
d3 = [('a', 'b'), ('c', 'd')]
#d3 = [('s a', 's b'), ('s c', 's d')]
#d3 = [('sa', 'sb'), ('sc', 'sd')]
#d3 = [['s a', 's b'], ['s c', 's d']]
d4 = dict(zip(ascii_uppercase,ascii_lowercase))
return [d1, d2, d3, d4]
def doPickle(data, pickleFile = 'pickleTest.p', proto = 2):
f = XWwz(pickleFile, 'w')
p = pickle.Pickler(f, proto)
p.dump(data)
f.close()
def doUnpicle(pickleFile = 'pickleTest.p'):
f = XWwz(pickleFile, 'rb')
up = pickle.Unpickler(f)
data = up.load()
f.close()
return data
data = createData()
doPickle(data)
xdata = doUnpicle()
1) The above code works, but if I use pickle instead of cPickle, I get
"KeyError: '\n'" when unpickling.
2) If I uncomment any of the other d3 bindings in createData(), I get
"KeyError: '\n'", or
"cPickle.UnpicklingError: invalid load key, ''" (newline)
3) If I don't use the d1, d2 and d4 bindings, no error occurs.
I can't find the explanation. Why the newline error? There are no
newlines in the data. Are not all those structures pickable?
Thanks for all help!
(on WinXP, CPython 2.4.1)
--
http://mail.python.org/mailman/listinfo/python-list
