Decompilation of Jython module

decompiled-fact.java

import org.python.compiler.*;
import org.python.core.*;

@APIVersion(36)
@MTime(1421279812000L)
@Filename("fact.py")
public class fact$py extends PyFunctionTable implements PyRunnable
{
    static fact$py self;
    static final PyCode f$0;
    static final PyCode fact$1;

    public PyObject f$0(final PyFrame pyFrame, final ThreadState threadState) {
        pyFrame.setline(1);
        pyFrame.setlocal("fact", (PyObject)new PyFunction(pyFrame.f_globals, Py.EmptyObjects, fact$py.fact$1, (PyObject)null));
        pyFrame.f_lasti = -1;
        return Py.None;
    }

    public PyObject fact$1(final PyFrame pyFrame, final ThreadState threadState) {
        pyFrame.setline(2);
        if (pyFrame.getglobal("__debug__").__nonzero__() && !pyFrame.getlocal(0)._ge((PyObject)Py.newInteger(0)).__nonzero__()) {
            throw Py.makeException(pyFrame.getglobal("AssertionError"), (PyObject)PyString.fromInterned("n must be >= 0"));
        }
        pyFrame.setline(3);
        if (pyFrame.getlocal(0)._eq((PyObject)Py.newInteger(0)).__nonzero__()) {
            pyFrame.setline(4);
            final PyInteger integer = Py.newInteger(1);
            pyFrame.f_lasti = -1;
            return (PyObject)integer;
        }
        pyFrame.setline(6);
        final PyObject mul = pyFrame.getlocal(0)._mul(pyFrame.getglobal("fact").__call__(threadState, pyFrame.getlocal(0)._sub((PyObject)Py.newInteger(1))));
        pyFrame.f_lasti = -1;
        return mul;
    }

    public fact$py(final String s) {
        super();
        fact$py.self = this;
        f$0 = Py.newCode(0, new String[0], s, "<module>", 0, false, false, (PyFunctionTable)fact$py.self, 0, (String[])null, (String[])null, 0, 4096);
        fact$1 = Py.newCode(1, new String[] { "n" }, s, "fact", 1, false, false, (PyFunctionTable)fact$py.self, 1, (String[])null, (String[])null, 0, 4097);
    }

    public PyCode getMain() {
        return fact$py.f$0;
    }

    public static void main(final String[] array) {
        Py.runMain(CodeLoader.createSimpleBootstrap(new fact$py("fact$py").getMain()), array);
    }

    public static CodeBootstrap getCodeBootstrap() {
        return PyRunnableBootstrap.getFilenameConstructorReflectionBootstrap((Class)fact$py.class);
    }

    public PyObject call_function(final int n, final PyFrame pyFrame, final ThreadState threadState) {
        switch (n) {
            case 0: {
                return this.f$0(pyFrame, threadState);
            }
            case 1: {
                return this.fact$1(pyFrame, threadState);
            }
            default: {
                return null;
            }
        }
    }
}

fact.py

def fact(n):
    assert n >= 0, "n must be >= 0"
    if n == 0:
        return 1
    else:
        return n * fact(n-1)