python 函数定义以及使用

例子

def print_models(unprinted_designs,completed_models):
    print(unprinted_designs)
    print(completed_models)
    while unprinted_designs:
        current_design = unprinted_designs.pop()
        print(printing model:+current_design)
        completed_models.append(current_design)
def show_completed_models(completed_models):
    print(

the following models have been printed：)
    for completed_model in completed_models:
        print(completed_model)
unprinted_designs = [iphone case,robot pendant,dodecahedron]
completed_models = []
print_models(unprinted_designs,completed_models)
show_completed_models(completed_models)

注意：

此定义了两个函数以及函数的使用方法，需要注意的两个地方是，首先定义的函数不执行，执行开始是从倒数第四行开始：unprinted_designs = [‘iphone case’,‘robot pendant’,‘dodecahedron’] 其次，定义的俩个函数之间赋的值没有关系，比如说在第一个函数中，赋值：unprinted_designs = [‘a’,‘b’]，不会对第二个函数里同样的unprinted_designs产生影响，如果在第二个函数中不对unprinted_designs赋值，则其为空。