《Python编程：从入门到实践》第八章8.6节课后作业_练习8-16:导入 选择一个你编写的且只包含一个函数的程序,将该函数放在另一个文件

本文代码是在jupyter中实现的，仅为了自我督促学习python之用。
8-15 打印模型：将示例 print_models.py 中的函数放在另一个名为 printing_functions.py 的文件中；在 print_models.py 的开头编写一条 import 语句，并修改这个文件以使用导入的函数。

主程序代码：
模块：printing_functions.py

def print_models(unprinted_designs, completed_models):
    """打印列表unprinted_designs中的每个元素，
    并将所有元素重新储存在空列表completed_models中
    """
    while unprinted_designs:
        current_design = unprinted_designs.pop()
        print("Printing model: " + current_design)
        completed_models.append(current_design)

def show_completed_models(completed_models):
    """将列表completed_models列表中的所有元素都打印出来"""
    print("\nThe following models have been printed: ")
    for completed_model in completed_models:
        print(completed_model)

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运行代码：

###导入模块中的所有函数###
from printing_functions import *

unprinted_designs = ['iphone case', 'robot pendant', 'dodecaedron']
completed_models = []

print_models(unprinted_designs, completed_models)
show_completed_models(completed_models)
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运行结果：

Printing model: dodecaedron
Printing model: robot pendant
Printing model: iphone case

The following models have been printed: 
dodecaedron
robot pendant
iphone case
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8-16 导入：选择一个你编写的且只包含一个函数的程序，并将这个函数放在另一个文件中。在主程序文件中，使用下述各种方法导入这个函数，再调用它：
————————————————————————————————
import module_name
from module_name import function_name
from module_name import function_name as fn
import module_name as mn
from module_name import
————————————————————————————————
主程序代码：
模块：pizza.py

def make_pizza(size, *toppings):
    """概述要制作的披萨"""
    print("\nMaking a " + str(size) + "-inch pizza with the following toppings: ")
    for topping in toppings:
        print("- " +  topping)
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运行代码：
【注】：主程序的代码已经事先编辑好了，并保存为pizza.py，此处直接用"import"调用即可。这样会使代码更加精炼，如果想要实际了解具体的运行过程，就要去看模块代码，一个模块里面往往包含了多个函数。

###导入整个模块###
import pizza

pizza.make_pizza(16, 'pepperon')

###导入整个模块并自定义模块名###
import pizza as p

p.make_pizza(14, 'mushrooms', 'green peppers')

###导入特定的函数###
from pizza import make_pizza

make_pizza(12, 'mushrooms', 'extra cheese', 'mushrooms')

###导入特定的函数并自定义函数名###
from pizza import make_pizza as mp

mp(15, 'pepperon', 'green peppers')

###导入模块中的所有函数###
from pizza import *

make_pizza(10, 'mushrooms', 'green peppers', 'extra cheese', 'pepperon')
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运行结果：

Making a 16-inch pizza with the following toppings: 
- pepperon

Making a 14-inch pizza with the following toppings: 
- mushrooms
- green peppers

Making a 12-inch pizza with the following toppings: 
- mushrooms
- extra cheese
- mushrooms

Making a 15-inch pizza with the following toppings: 
- pepperon
- green peppers

Making a 10-inch pizza with the following toppings: 
- mushrooms
- green peppers
- extra cheese
- pepperon
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8-17 函数编写指南：选择你在本章中编写的三个程序，确保它们遵循了本节介绍的函数编写指南。
答案（略）