Bugs item #839075, was opened at 2003-11-10 08:21
Message generated for change (Comment added) made by birkenfeld
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Category: Documentation
Group: Python 2.3
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Simon David Burton (simonb1)
Assigned to: Nobody/Anonymous (nobody)
Summary: Document that highly recursive data cannot be pickled
Initial Comment:
Make a note in section 3.4.14 Python Library Reference
(perhaps a footnote?) that higly recursive data
stuctures cannot be pickled. Setting the stack limit
helps a bit, but does not scale to large networks of data.
eg.
#!/usr/bin/env python
import cPickle as pickle
#import pickle
import os
#sys.setrecursionlimit(4000)
N = 2048
print "building..."
nest = [ [] for i in range(N) ]
for i in range(N):
for j in range(N):
nest[i].append( nest[j] )
print "dumping..."
file = open("nest.pkl","wb")
try:
pickle.dump( nest, file )
except RuntimeError, e:
print e
----------------------------------------------------------------------
>Comment By: Reinhold Birkenfeld (birkenfeld)
Date: 2005-12-27 00:28
Message:
Logged In: YES
user_id=1188172
Added a note to the docs in rev. 41822/41823.
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