Python 子/父类，子类返回字符串两次？

Question

这个问题很简单，对你们中的一个人来说可能很明显，但我不确定为什么会这样。所以这是我制作的三个 python 文件。

主要字符类:

class Character():
    """
    This is the main parents class for creation of
    characters, be they player, NPC or monsters they
    shall all share common traits
    """

    def __init__(self, name, health, defense):
        """Constructor for Character"""
        self.name = name
        self.health = health
        self.defense = defense

播放器类:

from character import *

class Player(Character):
    """
    The player class is where heros are made
    They inherit common traits from the Character class
    """

    def __init__(self, name, health, defense, str, int):
        Character.__init__(self, name, health, defense)
        self.str = str
        self.int = int

初始化:

from Letsago.player import Player


hero = Player("Billy", 200, 10, 10, 2)    
print hero.name

这导致:

Billy
Billy

为什么会被返回两次？

Answer 1

我已将您的示例放在名为 test.py 的文件中:

class Character():
    """
    This is the main parents class for creation of
    characters, be they player, NPC or monsters they
    shall all share common traits
    """

    def __init__(self, name, health, defense):
        """Constructor for Character"""
        self.name = name
        self.health = health
        self.defense = defense


class Player(Character):
    """
    The player class is where heros are made
    They inherit common traits from the Character class
    """

    def __init__(self, name, health, defense, str, int):
        Character.__init__(self, name, health, defense)
        self.str = str
        self.int = int


hero = Player("Billy", 200, 10, 10, 2)
print hero.name

并执行以下命令(ubuntu 13.04 上的 python 2.7):

python test.py

并在控制台中得到以下信息

Billy

尝试像我在一个文件中所做的那样隔离示例并执行它(在交互式 shell 之外)。还要检查您的模块并检查您的 from character import *。确保您正在导入正确的 Player 类