def load_installed_version(self):
        installed_packages = get_installed_pypackages()
        if self.package in installed_packages:
            self.version = "=={}".format(
                installed_packages[self.package].version)
def __init__(self):
        super().__init__('confusion_matrix.yaml')

        self._matrix = [[]]
        self._categories = []
        self._initialized = True