eng84_excercises

Python练习 任务 出生日期计算器 要定义age和name变量，我可以在文档开始时进行此操作，并为其指定占位符值。 age = - 1 # This is so I know immediately if something has gone wrong with later assignments name = "" 相反，我选择了在接受用户输入时声明变量。 这使我更容易检查用户的输入。 while True : age_input = input ( "How old are you? " ) # don't forget to cast into an int! if age_input . isdigit (): # if the age entered is a digit, then we can move onto the next part of