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, *args, **kwargs):
        FloatConverter.__init__(self, *args, **kwargs)
        self.type_ = "float"
        self.regex = '-?\\d+(\\.\\d+)?'