util.py 文件源码

def is_number(s):
    """
    Check string for being a numeric value.
    http://pythoncentral.io/how-to-check-if-a-string-is-a-number-in-python-including-unicode/
    """
    try:
        float(s)
        return True
    except ValueError:
        pass

    try:
        import unicodedata
        unicodedata.numeric(s)
        return True
    except (TypeError, ValueError):
        pass

    return False