https://type.so/python/python-tips-1.html zh-CN 判断是否为数字isdigit()的话，里面不能有小数点。def is_number(s): try: n=str(float(s)) if n == "n... Thu, 01 Jan 1970 08:00:00 +0800 Thu, 01 Jan 1970 08:00:00 +0800