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This library allows your Java program to interface very easily with the Python world. It uses the Pyro protocol to call methods on remote objects. (See https://pyro5.readthedocs.io/). Pyrolite only implements part of the client side Pyro library, hence its name 'lite'... So if you don't need Pyro's full feature set, Pyrolite may be a good choice to connect java or .NET and python. Version 5.0 changes: support Pyro5 wire protocol. Dropped support of Pyro4 (stick to version 4.xx for that).

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package net.razorvine.pickle.objects;

import java.util.HashMap;
import java.util.TimeZone;
import net.razorvine.pickle.PickleException;

/**
 * Timezone offset class that implements __setstate__ for the unpickler
 * to track what TimeZone a dateutil.tz.tzoffset or tzutc should unpickle to
 */
public class Tzinfo {

    private boolean forceTimeZone;
    private TimeZone timeZone;

    public Tzinfo(TimeZone timeZone) {
        this.forceTimeZone = true;
        this.timeZone = timeZone;
    }

    public Tzinfo() {
        this.forceTimeZone = false;
    }

    public TimeZone getTimeZone() {
        return this.timeZone;
    }

    /**
     * called by the unpickler to restore state
     */
    public void __setstate__(HashMap args) {
        if (this.forceTimeZone)
            return;
        throw new PickleException("unexpected pickle data for tzinfo objects: can't __setstate__ with anything other than an empty dict, anything else is unimplemented");
    }
}