NameError：全局名称未在MyClass.py中定义

Question

I am running an example in a Python book for classes.

MyClass.py

class MyClass:
    def __init__(self, Name="Sam", Age=32):
        self.Name = Name
        self.Age = Age

    def GetName(self):
        return self.Name

    def SetName(self, Name):
        self.Name = Name

    def GetAge(self):
        return self.Age

    def SetAge(self, Age):
        self.Age = Age

    def __str__(self):
        return "{0} is aged {1}.".format(self.Name, self.Age)

MyClassTest.py

import MyClass

SamsRecord = MyClass.MyClass()
AmysRecord = MyClass.MyClass("Amy", 44)

print(SamsRecord.GetAge())
SamsRecord.SetAge(33)

print(AmysRecord.GetName())
AmysRecord.SetName("Aimee")

print(SamsRecord)
print(AmysRecord)

When I run MyClassTest.py, I got the following error:

---

Traceback (most recent call last): File "MyClassTest.py", line 3, in <module>
SamsRecord = MyClass.MyClass() File "MyClass.py", line 3, in __init__ self.Name = Name
NameError: global name 'Name' is not defined

---

Any suggests on how to fix the error?

Answer 1

def __init__(self, name="Sam", Age=32):
    self.Name = Name
    self.Age = Age

typing error, you are trying to set self.Name to Name but in the parameters you called it name instead of Name so try this:

def __init__(self, Name="Sam", Age=32):
    self.Name = Name
    self.Age = Age

Answer 2

You need to change self.Name = Name to self.Name = name because the pamameter is name and not Name . Moreover, in this declaration def SetAge(self, Name): , it should be def SetAge(self, Age): because there's not argument Name as such (which you are trying to set in the next line).