如何修复我的第一个 python 代码？ 名称错误，class 名称未定义

Question

我在第一次编程 class 并且出于某种原因我无法修复此代码。 我们必须编写一个程序来保存一个名册。 我的老师给了我们一个模板，我完全坚持了下来。 她在回复电子邮件方面不是最好的，我已经在互联网上搜索过试图找出答案。 我检查了我的压痕一百万次，所以我知道不是这样。 我将在下面包含整个代码，感谢您的帮助！

class TeamClass(object):
name = ""
jersey = ""
number = ""

def __init__(self, name, jersey, number):
    self.name = name
    self.jersey = jersey
    self.number = number

def set_name(self, name):
    self.name = name

def set_jersey(self, jersey):
    self.jersey = jersey

def set_number(self, number):
    self.number = number

def get_name(self):
    return self.name

def get_jersey(self):
    return self.jersey

def get_number(self):
    return self.number

def display_team_roster(self):
    print("Player")
    print("Name: ", self.name)
    print("Jersey: ", self.jersey)
    print("Phone Number: ", self.number)
    print("-------------")

def menu(self):
    print("")
    print("<<<<<Main Menu>>>>>")
    print("1. Display Team Roster")
    print("2. Add Team Member")
    print("3. Remove Team Member")
    print("4. Edit Team Member")
    print("9. Exit Program")
    selection = int(input("Enter a menu number or 9 to exit: "))
    print("")
    return selection

def display_roster(roster):
    if len(roster) > 0:
        for x in roster.keys():
            roster[x].display_team_roster()
    else:
        print("Roster is empty")

def add_member(roster):
    new_member = input("Enter new member: ")
    new_jersey = input("Enter jersey#: ")
    new_number = input("Enter phone number: ")
    roster[new_member] = TeamClass(new_member, new_jersey, new_number)
    return roster

def del_member(roster):
    del_member = input("Which member would you like to remove?: ")
    if del_member in roster:
        del roster[del_member]
        print(del_member, "has been removed")
    else:
        print(del_member, "was not found")
        return roster

def edit_member(roster):
    existing_member = input("Which member would you like to edit? ")
    if existing_member in roster:
        new_member = input("Enter new members name: ")
        new_jersey = input("Enter new jersey#: ")
        new_number = input("Enter new phone number: ")
        roster[existing_member] = TeamClass(new_member, new_jersey, new_number)
        print(existing_member, "has been changed to", new_member)
    else:
        print(existing_member, "was not found")
        return roster
print("")
roster = {}
menu_selection = menu(object)
while menu_selection != 9:
    if menu_selection == 1:
        display_roster(roster)
    elif menu_selection == 2:
        roster = add_member(roster)
    elif menu_selection == 3:
        roster = del_member(roster)
    elif menu_selection == 4:
        roster = edit_member(roster)
        menu_selection = menu()
print("Exiting program")

Answer 1

Python 对缩进很严格，所以为了使这项工作更正您的 class 与以下缩进：

class TeamClass(object):
    name = ""
    jersey = ""
    number = ""

Answer 2

您可能需要将class TeamClass(object)行下方的所有行缩进 4 个空格，直到def menu(self):行，因为所有这些功能似乎都是TeamClass的方法。 虽然menu(self)可能看起来像一个 class 方法，因为它在参数中有self但我不认为是这种情况，因为menu是直接在线上调用menu_selection = menu(object)

class TeamClass(object):
    name = ""
    jersey = ""
    number = ""

    def __init__(self, name, jersey, number):
        self.name = name
        self.jersey = jersey
        self.number = number

    def set_name(self, name):
        self.name = name

    def set_jersey(self, jersey):
        self.jersey = jersey

    def set_number(self, number):
        self.number = number

    def get_name(self):
        return self.name

    def get_jersey(self):
        return self.jersey

    def get_number(self):
        return self.number

    def display_team_roster(self):
        print("Player")
        print("Name: ", self.name)
        print("Jersey: ", self.jersey)
        print("Phone Number: ", self.number)
        print("-------------")

def menu(self):
    print("")
    print("<<<<<Main Menu>>>>>")
    print("1. Display Team Roster")
    print("2. Add Team Member")
    print("3. Remove Team Member")
    print("4. Edit Team Member")
    print("9. Exit Program")
    selection = int(input("Enter a menu number or 9 to exit: "))
    print("")
    return selection

def display_roster(roster):
    if len(roster) > 0:
        for x in roster.keys():
            roster[x].display_team_roster()
    else:
        print("Roster is empty")

def add_member(roster):
    new_member = input("Enter new member: ")
    new_jersey = input("Enter jersey#: ")
    new_number = input("Enter phone number: ")
    roster[new_member] = TeamClass(new_member, new_jersey, new_number)
    return roster

def del_member(roster):
    del_member = input("Which member would you like to remove?: ")
    if del_member in roster:
        del roster[del_member]
        print(del_member, "has been removed")
    else:
        print(del_member, "was not found")
        return roster

def edit_member(roster):
    existing_member = input("Which member would you like to edit? ")
    if existing_member in roster:
        new_member = input("Enter new members name: ")
        new_jersey = input("Enter new jersey#: ")
        new_number = input("Enter new phone number: ")
        roster[existing_member] = TeamClass(new_member, new_jersey, new_number)
        print(existing_member, "has been changed to", new_member)
    else:
        print(existing_member, "was not found")
        return roster

print("")
roster = {}
menu_selection = menu(object)
while menu_selection != 9:
    if menu_selection == 1:
        display_roster(roster)
    elif menu_selection == 2:
        roster = add_member(roster)
    elif menu_selection == 3:
        roster = del_member(roster)
    elif menu_selection == 4:
        roster = edit_member(roster)
        menu_selection = menu()
print("Exiting program")

Answer 3

你错过了一个空格，你需要在你的name和jersey和number中添加空格

尝试这个：

class TeamClass(object):
    name = ""
    jersey = ""
    number = ""