#coding=utf-8def Total_number_of_students(boys, girls): PRint "There are %d boys within the environment." % boys print "There are %d girls within the environment./n" % girls#运行方式一:数字print "Here's the most simple way to Operate this function by using numbers"Total_number_of_students(4, 5)#运行方式二：变量print "Here's another way to make the function works by working with arguments."boys = 10girls = 20Total_number_of_students(boys, girls)#运行方式三: 数学表达式print "Here's another way to import numbers to functions"Total_number_of_students(10 + 3, 10 + 4)#运行方式四：数字+变量print "Here's another way to make the function works."Total_number_of_students(boys + 4, girls + 5)#运行方式五：用户输入print "Here's the fifth way to make the function meaningful by raw_input："boys = int(raw_input("how many boys are there within the environment?"))girls = int(raw_input("how many girls are there within the envrionment?"))Total_number_of_students(boys, girls)#运行方式六：用户输入2Note:1）def函数名是由：字符与下划线组成的。2）函数名后面紧跟着（）3）（）里面包含着参数，多个参数用逗号隔开，切不能使用重复的参数名。4）函数名后面的（），紧跟着：5）4个空格缩进后，编写该函数的代码。6）用户在终端输入时的数字也是字符串，应该使用X = int(raw_input()) 来处理
