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, branch, package):
		Base.__init__(self)
		self.branch = branch
		self.package = package
		self.sp_obj = None