Segmentation fault when iterating over AC trie

[stephankoe]

Issue

When iterating over an AC trie, a segmentation fault occurs. For example:

import cyac
trie = cyac.AC.build(['hello', 'world'])
for w in trie:
    print(w)

Output:

hello
world










Segmentation fault

However, AC.items() is works as expected.

Environment

• Ubuntu 18.04
• Python 3.6.9
• Cython 0.29.21
• cyac 1.4

[chenkovsky]

it seems that it's cython's bug. AC has not implemented iter method.
In my python environment, your code complains:

lib/cyac/ac.pyx in cyac.ac.AC.__getitem__()

lib/cyac/trie.pyx in cyac.trie.Trie.__getitem__()

AttributeError: 'NoneType' object has no attribute 'decode'

[chenkovsky]

@stephankoe please try this branch. #14

[stephankoe]

Yes, that branch is working. Thanks!