interactive.py 文件源码

def load_history(self):
        global readline
        if readline is None:
            try:
                import readline
            except ImportError:
                return
        if self.history_file_full_path is None:
            folder = os.environ.get('USERPROFILE', '')
            if not folder:
                folder = os.environ.get('HOME', '')
            if not folder:
                folder = os.path.split(sys.argv[0])[1]
            if not folder:
                folder = os.path.curdir
            self.history_file_full_path = os.path.join(folder,
                                                       self.history_file)
        try:
            if os.path.exists(self.history_file_full_path):
                readline.read_history_file(self.history_file_full_path)
        except IOError:
            e = sys.exc_info()[1]
            warnings.warn("Cannot load history file, reason: %s" % str(e))