setupschool.py 文件源码

def float_input(self, question, message='Invalid entry', default=None, required=True):
        '''
        Method for floating point inputs with optionally specifiable error message.
        '''
        float_result = None
        requiredFlag = True

        while (float_result is None and requiredFlag):
            result = input('%s: ' % question)
            if not result and not required:
                float_result = None
                requiredFlag = False
            if not result and default:
                float_result = default

            if float_result is None and requiredFlag:
                try:
                    float_result = float(result)
                except ValueError:
                    self.stdout.write(self.style.ERROR(message))
                    float_result = None
        return float_result