Comment by amelius

Roughly speaking, by cycles I mean a structure that refers to itself somehow. For example:

    A = {}
    B = {}
    A["ref"] = B
    B["ref"] = A

So would it be possible to serialize A and B, and of course to deserialize them?

Note that

    print A

gives

    {'ref': {'ref': {...}}}

which is of course not a suitable serialization, since you can't recover the original structure from it.