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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _gst_available():
 """Determine whether Gstreamer and the Python GObject bindings are installed. """

    try:
        import gi
    except ImportError:
        return False

    try:
        gi.require_version('Gst', '1.0')
    except (ValueError, AttributeError):
        return False

    try:
        from gi.repository import Gst  # noqa
    except ImportError:
        return False

    return True