将列表传递给导入的函数

Question

我将以下程序中的函数放入一个模块中，但是当我将模块导入一个单独的程序并调用这些函数时，我得到一个错误（见下文）。我需要做什么才能使函数使用模块正确运行？非常感谢您的帮助。你知道吗

原始程序：

def print_m(unprinted, completed):
    while unprinted:
        current = unprinted.pop()
        print("Printing: " + current)
        completed.append(current)

def show_completed(completed):
    print("\nThe following have been printed:")
    for completed_item in completed:
        print(completed_item)

unprinted = ['star', 'sword', 'model']
completed = []

print_m(unprinted, completed)
show_completed(completed)

将函数放入模块-打印_函数.py地址：

def print_m(unprinted, completed):
    while unprinted:
        current = unprinted.pop()
        print("Printing: " + current)
        completed.append(current)

def show_completed(completed):
    print("\nThe following have been printed:")
    for completed_item in completed:
        print(completed_item)

编写了单独的程序来导入模块：

import printing_functions as pf

unprinted = ['star', 'sword', 'model']
completed = []

pf.print_m(unprinted, completed)
pf.show_completed(completed)

运行程序时，出现以下错误：

NameError: name 'completed' is not defined

---

更新：

我在上面的代码中使用了较短的术语，它看起来确实有效，这让我更加困惑。在下面张贴原始代码。如果上面的工作，为什么下面的模块不工作？你知道吗

def print_models(unprinted_designs, completed_designs):
    """
    Simulate printing each design, until none are left.
    Move each design to completed_models after printing.
    """
    while unprinted_designs:
        current_design = unprinted_designs.pop()

         #Simulate creating a 3D print from the design.
        print("Printing model: " + current_design)
        completed_models.append(current_design)

def show_completed_models(completed_models):
    """Show all the models that were printed."""
    print("\nThe 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)

---

模块

def print_models(unprinted_designs, completed_designs):
    """
    Simulate printing each design, until none are left.
    Move each design to completed_models after printing.
    """
    while unprinted_designs:
        current_design = unprinted_designs.pop()

         #Simulate creating a 3D print from the design.
        print("Printing model: " + current_design)
        completed_models.append(current_design)

def show_completed_models(completed_models):
    """Show all the models that were printed."""
    print("\nThe following models have been printed:")
    for completed_model in completed_models:
        print(completed_model)

---

新程序

import printing_functions as pf

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

pf.print_models(unprinted_designs, completed_models)
pf.show_completed_models(completed_models)

---

回溯：

回溯（最近一次呼叫）： 文件“/home/pi/Documents/Python Projects/Python\u work/8-15\u printing_型号.py“，第6行，在” pf.U型号（未印刷的设计，已完成的模型） 文件“/home/pi/Documents/Python Projects/Python\u work/printing_函数.py“，第11行，印刷型” 已完成_模型.append（当前设计） NameError:未定义名称“completed\u models”