Python 如何将if-else从一个函数转换为另一个函数

我有一个函数“get_number（code，attribute）”，它输出与特定信息相关联的特定代码部分。但我不确定如何在“print_description（code）”中使用此函数，以便在函数只有一个返回时可以获得代码的特定部分

在“print_description（code）”文档字符串下，我想替换那些等式“get_number（code，attribute）”

---

每个类型只需调用一次函数，如下所示：

country\u code=get\u code（序列号，'country'）
颜色代码=获取代码（序列号“颜色”）
大小\代码=获取\代码（序列号，'大小'）
item_num=获取代码（序列号，'item'）

我完成了您的代码，并附上了一些备注

def get_code(serial_number, type):
    """
    -------------------------------------------------------
    Returns code from serial number and type.
    Use: code = get_code(serial_number, type)
    -------------------------------------------------------
    Parameters:
        serial_number - an arbitrary serial number (str)
        type - some string representing a serial number attribute (str)
    Returns:
        code - value derived from type and serial number (int)
    -------------------------------------------------------
    """
    ....

def print_description(serial_number):
    """
    -------------------------------------------------------
    Print detailed description based on the serial number.
    Use: description = print_description(serial_number)
    -------------------------------------------------------
    Parameters:
        serial_number - an arbitrary serial number (str)
    Returns:
        country - country code (int)
        color - color code (int)
        size - size code (int)
        item - item code (int)
    -------------------------------------------------------
    """
    if not isinstance(serial_number, str):
        print('Invalid Serial Number')
    else:
        country_code = get_code(serial_number, 'country')
        color_code = get_code(serial_number, 'color')
        size_code = get_code(serial_number, 'size')
        item_num = get_code(serial_number, 'item')

        # where is get_country, get_color, etc., defined?
        # country1 = get_country(country_code)
        # color1 = get_color(color_code)
        # size1 = get_size(size_code)

        # There is not 'Undefined' in Python! Is this code a port from JS?
        # if country1 == 'Undefined' or color1 == 'Undefined' or size1 == 'Undefined':
        #    print('Description not found')
        #else:
        #
        print('{} {} Ball, item#: {} made in {}'.format(size_code, color_code, item_num, country_code))

    return # where are the return values?

---

def get_number（code，type）：

不应该是

def get_number（code，attribute）：

？另外，可能返回字典中的所有代码：

return{“x_code”：int（code）//100000，“y_code”：……

def get_code(serial_number, type):
    """
    -------------------------------------------------------
    Returns code from serial number and type.
    Use: code = get_code(serial_number, type)
    -------------------------------------------------------
    Parameters:
        serial_number - an arbitrary serial number (str)
        type - some string representing a serial number attribute (str)
    Returns:
        code - value derived from type and serial number (int)
    -------------------------------------------------------
    """
    ....

def print_description(serial_number):
    """
    -------------------------------------------------------
    Print detailed description based on the serial number.
    Use: description = print_description(serial_number)
    -------------------------------------------------------
    Parameters:
        serial_number - an arbitrary serial number (str)
    Returns:
        country - country code (int)
        color - color code (int)
        size - size code (int)
        item - item code (int)
    -------------------------------------------------------
    """
    if not isinstance(serial_number, str):
        print('Invalid Serial Number')
    else:
        country_code = get_code(serial_number, 'country')
        color_code = get_code(serial_number, 'color')
        size_code = get_code(serial_number, 'size')
        item_num = get_code(serial_number, 'item')

        # where is get_country, get_color, etc., defined?
        # country1 = get_country(country_code)
        # color1 = get_color(color_code)
        # size1 = get_size(size_code)

        # There is not 'Undefined' in Python! Is this code a port from JS?
        # if country1 == 'Undefined' or color1 == 'Undefined' or size1 == 'Undefined':
        #    print('Description not found')
        #else:
        #
        print('{} {} Ball, item#: {} made in {}'.format(size_code, color_code, item_num, country_code))

    return # where are the return values?