LintCode:有效数字

LintCode:有效数字

人生苦短，我用Python!

class Solution:    # @param {string} s the string that represents a number    # @return {boolean} whether the string is a valid number    def isNumber(self, s):        # Write your code here        num = None        try:            num = eval(s)        except:            pass        if num != None:            return True        return False