# -*- 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'))   # False

print(is_number(''))     # True

print(is_number('1.3'))   # True

print(is_number('-1.37')) # True

print(is_number('1e3'))   # True

# 测试 Unicode

# 阿拉伯语 5

print(is_number('٥'))  # False

# 泰语 2

print(is_number('๒'))  # False

# 中文数字

print(is_number('四')) # False

# 版权号

print(is_number('©'))  # False