# -*- coding: UTF-8 -*- # Filename : test.py# author by : www.runoob.com def is_number(s):    try:        float(s)        return True    except ValueError:        pass     try:        import unicodedata        unicodedata.numeric(s)        return True    except (TypeError, ValueError):        pass     return False # 测试字符串和数字print(is_number('foo'))   # Falseprint(is_number('1'))     # Trueprint(is_number('1.3'))   # Trueprint(is_number('-1.37')) # Trueprint(is_number('1e3'))   # True # 测试 Unicode# 阿拉伯语 5print(is_number('٥'))  # True# 泰语 2print(is_number('๒'))  # True# 中文数字print(is_number('四')) # True# 版权号print(is_number('©'))  # False