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Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.

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package org.python.compiler;

import junit.framework.TestCase;

public class ModuleTest extends TestCase {

    /**
     * In order to get testCopysign() in test_math.py passing, PyFloatConstant needs to distinguish
     * between 0.0 and -0.0:
     * 
     *      *   # copysign should let us distinguish signs of zeros
     * 
     */
    public void testPyFloatConstant_Zero() {
        PyFloatConstant positiveZero = new PyFloatConstant(0.0);
        PyFloatConstant negativeZero = new PyFloatConstant(-0.0);
        assertNotSame(positiveZero, negativeZero);
        assertFalse(positiveZero.equals(negativeZero));
    }
}