human
Complete the below
def addTZCleanup(testCase):

    ''''Add cleanup hooks to a test case to reset timezone to original value.
    @param testCase: the test case to add the cleanup to.
    @type testCase: L{unittest.TestCase}'
    '''
 ... What is a the Python program you requested?
assistant
#Here is the Python program you requested.
    tzIn = environ.get('TZ', None)
    @testCase.addCleanup
    def resetTZ():
        setTZ(tzIn)